Signed-off-by: Matt Bruce <mbrucedogs@gmail.com>

PRD.md

@@ -51,6 +51,7 @@ These principles are fundamental to the project's long-term success and must be
 - **CLI Commands Documentation:** All CLI functionality, options, and usage examples must be documented in `cli/commands.txt`
 - **Code Comments:** Significant logic changes should include inline documentation
 - **API Documentation:** New endpoints, functions, or interfaces must be documented
+- **API Update Requirement:** Whenever a new API endpoint is added, the PRD.md, README.md, and cli/commands.txt MUST be updated to reflect the new functionality
 
 **Documentation Update Checklist:**
 - [ ] Update PRD.md with any architectural or requirement changes
@@ -59,6 +60,7 @@ These principles are fundamental to the project's long-term success and must be
 - [ ] Add inline comments for complex logic or business rules
 - [ ] Update any configuration examples or file structure documentation
 - [ ] Review and update implementation status sections
+- [ ] **API Updates:** When new API endpoints are added, update PRD.md, README.md, and cli/commands.txt
 
 **CLI Commands Documentation Requirements:**
 - **Comprehensive Coverage:** All CLI arguments, options, and flags must be documented with examples
@@ -68,6 +70,14 @@ These principles are fundamental to the project's long-term success and must be
 - **Integration Notes:** Document how CLI integrates with web UI and other components
 - **Version Tracking:** Keep version information and feature status up to date
 
+**API Documentation Requirements:**
+- **Endpoint Documentation:** All new API endpoints must be documented in the PRD.md with their purpose, parameters, and responses
+- **README Integration:** API changes must be reflected in README.md with usage examples and integration notes
+- **CLI Integration:** If CLI commands interact with APIs, they must be documented in cli/commands.txt
+- **Version Tracking:** API versioning and changes must be tracked in documentation
+- **Error Handling:** Document all possible error responses and status codes
+- **Authentication:** Document any authentication requirements or API key usage
+
 This documentation requirement is mandatory and ensures the project remains maintainable and accessible to future developers and users.
 
 ### 2.3 Code Quality & Development Standards
@@ -151,7 +161,7 @@ These standards ensure the codebase remains clean, maintainable, and accessible
 
 ### 3.1 Input
 
-- Reads from `/data/allSongs.json`
+- Reads from `/data/songs.json`
 - Each song includes at least:
   - `artist`, `title`, `path`, (plus id3 tag info, `channel` for MP4s)
 
@@ -220,7 +230,7 @@ These standards ensure the codebase remains clean, maintainable, and accessible
 ```
 KaraokeMerge/
 ├── data/
-│   ├── allSongs.json          # Input: Your song library data
+│   ├── songs.json             # Input: Your song library data
 │   ├── skipSongs.json         # Output: Generated skip list
 │   ├── preferences/           # User priority preferences
 │   │   ├── priority_preferences.json
@@ -287,6 +297,13 @@ KaraokeMerge/
 - **Priority Persistence**: Save/load user priority preferences to/from JSON files
 - **Priority Preferences API**: RESTful endpoints for managing priority preferences
 
+#### **Reset & Regenerate System**
+- **One-Click Reset**: Delete all generated files and regenerate everything with a single button click
+- **Complete Cleanup**: Removes skipSongs.json, reports directory, and preferences directory
+- **Automatic CLI Execution**: Runs the CLI tool automatically to regenerate all data
+- **Progress Feedback**: Shows loading state and provides detailed feedback on completion
+- **Safety Confirmation**: Requires user confirmation before performing destructive operations
+
 #### **User Interface Enhancements**
 - **Visual Status Indicators**: Color-coded cards (green for kept, red for skipped)
 - **File Type Badges**: Visual indicators for MP3, MP4, and CDG files
@@ -400,7 +417,7 @@ data/preferences/
 ### ✅ Completed Features
 
 #### **Core CLI Functionality**
-- [x] Write initial CLI tool to parse allSongs.json, deduplicate, and output skipSongs.json
+- [x] Write initial CLI tool to parse songs.json, deduplicate, and output skipSongs.json
 - [x] Print CLI summary reports (with verbosity control)
 - [x] Implement config file support for channel priority
 - [x] Organize folder/file structure for easy expansion
@@ -437,6 +454,7 @@ data/preferences/
 - [x] Pattern analysis and channel optimization suggestions
 - [x] Non-destructive operation (skip lists only)
 - [x] Verbose and dry-run modes
+- [x] Reset & regenerate functionality with one-click cleanup
 
 ### 🎯 Current Implementation
 

README.md

@@ -10,6 +10,7 @@ A comprehensive tool for analyzing, deduplicating, and cleaning up large karaoke
 - **CDG/MP3 Pairing**: Treats CDG and MP3 files with the same base filename as single karaoke units
 - **Channel Priority**: For MP4 files, prioritizes based on folder names in the path
 - **Fuzzy Matching**: Configurable fuzzy matching for artist/title comparison
+- **Playlist Validation**: Validates playlists against your song library with exact and fuzzy matching
 
 ### File Type Priority System
 1. **MP4 files** (with channel priority sorting)
@@ -30,14 +31,55 @@ A comprehensive tool for analyzing, deduplicating, and cleaning up large karaoke
 - **Priority Indicators**: Visual numbered indicators show the current priority order
 - **Reset Functionality**: Easily reset to default priorities if needed
 
+### 🔄 Reset & Regenerate Feature
+- **One-Click Reset**: Delete all generated files and regenerate everything with a single button click
+- **Complete Cleanup**: Removes skipSongs.json, reports directory, and preferences directory
+- **Automatic CLI Execution**: Runs the CLI tool automatically to regenerate all data
+- **Progress Feedback**: Shows loading state and provides detailed feedback on completion
+
 ## Installation
 
-1. Clone the repository
+### Prerequisites
+
+- Python 3.7 or higher
+- pip (Python package installer)
+
+### Installation Steps
+
+1. Clone the repository:
+   ```bash
+   git clone <repository-url>
+   cd KaraokeMerge
+   ```
+
 2. Install dependencies:
    ```bash
    pip install -r requirements.txt
    ```
 
+   **Note**: The installation includes:
+   - **Flask** for the web UI
+   - **fuzzywuzzy** and **python-Levenshtein** for fuzzy matching in playlist validation
+   - All other required dependencies
+
+3. Verify installation:
+   ```bash
+   python -c "import flask, fuzzywuzzy; print('All dependencies installed successfully!')"
+   ```
+
+### Migration from Previous Versions
+
+If you're upgrading from a previous version that used `allSongs.json`, run the migration script:
+
+```bash
+python3 migrate_to_songs_json.py
+```
+
+This script will:
+- Rename `allSongs.json` to `songs.json`
+- Add `data_directory` configuration to `config.json`
+- Create backups of your original files
+
 ## Usage
 
 ### CLI Tool
@@ -64,6 +106,21 @@ The web UI will automatically:
 2. Start the Flask server
 3. Open your default browser to the interface
 
+### Playlist Validation
+
+Validate your playlists against your song library:
+```bash
+cd cli
+python playlist_validator.py
+```
+
+Options:
+- `--playlist-index N`: Validate a specific playlist by index
+- `--output results.json`: Save results to a JSON file
+- `--apply`: Apply corrections to playlists (use with caution)
+
+**Note**: Playlist validation uses fuzzy matching to find potential matches. Make sure fuzzywuzzy is installed for best results.
+
 ### Priority Preferences
 
 The web UI now supports drag-and-drop priority management:
@@ -87,7 +144,7 @@ Edit `config/config.json` to customize:
 ```
 KaraokeMerge/
 ├── data/
-│   ├── allSongs.json          # Input: Your song library data
+│   ├── songs.json             # Input: Your song library data
 │   ├── skipSongs.json         # Output: Generated skip list
 │   ├── preferences/           # User priority preferences
 │   │   └── priority_preferences.json
@@ -113,7 +170,7 @@ KaraokeMerge/
 
 ## Data Requirements
 
-Place your song library data in `data/allSongs.json` with the following format:
+Place your song library data in `data/songs.json` with the following format:
 ```json
 [
   {

cli/commands.txt

@@ -1,77 +1,117 @@
-# Karaoke Song Library Cleanup Tool - CLI Commands Reference
+# Karaoke Song Library Cleanup Tool - CLI Commands Reference (v2.0)
 
 ## Overview
-The CLI tool analyzes karaoke song collections, identifies duplicates, and generates skip lists for future imports. It supports multiple file formats (MP3, CDG, MP4) with configurable priority systems.
+The CLI tool analyzes karaoke song collections, identifies duplicates, validates playlists, and generates skip lists for future imports. It supports multiple file formats (MP3, CDG, MP4) with configurable priority systems.
 
-## Basic Usage
+## Quick Start Commands
 
-### Standard Analysis
+### Basic Analysis (Most Common)
 ```bash
-python cli/main.py
+cd cli
+python3 main.py
 ```
 Runs the tool with default settings:
-- Input: `data/allSongs.json`
+- Input: `data/songs.json`
 - Config: `config/config.json`
 - Output: `data/skipSongs.json`
-- Verbose: Disabled
-- Reports: **Automatically generated** (including web UI data)
+- Reports: **Automatically generated**
 
-### Verbose Output
+### Process Everything (Recommended)
 ```bash
-python cli/main.py --verbose
+cd cli
+python3 main.py --process-all
+```
+Complete processing including:
+- Duplicate analysis and skip list generation
+- Favorites processing with priority logic (MP4 over MP3)
+- History processing with priority logic
+- Comprehensive report generation
+
+## Main CLI Commands (main.py)
+
+### Basic Analysis Commands
+
+#### Standard Analysis
+```bash
+python3 main.py
+```
+Runs the tool with default settings and generates all reports automatically.
+
+#### Verbose Output
+```bash
+python3 main.py --verbose
 # or
-python cli/main.py -v
+python3 main.py -v
 ```
-Enables detailed output showing:
-- Individual song processing
-- Duplicate detection details
-- File type analysis
-- Channel priority decisions
+Enables detailed output showing individual song processing and decisions.
 
-### Dry Run Mode
+#### Dry Run Mode
 ```bash
-python cli/main.py --dry-run
+python3 main.py --dry-run
 ```
-Analyzes songs without generating the skip list file. Useful for:
-- Testing configuration changes
-- Previewing results before committing
-- Validating input data
+Analyzes songs without generating the skip list file. Useful for testing and previewing results.
 
-## Configuration Options
+### Configuration Commands
 
-### Custom Configuration File
+#### Custom Configuration File
 ```bash
-python cli/main.py --config path/to/custom_config.json
+python3 main.py --config path/to/custom_config.json
 ```
 Uses a custom configuration file instead of the default `config/config.json`.
 
-### Show Current Configuration
+#### Show Current Configuration
 ```bash
-python cli/main.py --show-config
+python3 main.py --show-config
 ```
-Displays the current configuration settings and exits. Useful for:
-- Verifying configuration values
-- Debugging configuration issues
-- Understanding current settings
+Displays the current configuration settings and exits.
 
-## Input/Output Options
+### Input/Output Commands
 
-### Custom Input File
+#### Custom Input File
 ```bash
-python cli/main.py --input path/to/songs.json
+python3 main.py --input path/to/songs.json
 ```
-Specifies a custom input file instead of the default `data/allSongs.json`.
+Specifies a custom input file instead of the default `data/songs.json`.
 
-### Custom Output Directory
+#### Custom Output Directory
 ```bash
-python cli/main.py --output-dir ./custom_output
+python3 main.py --output-dir ./custom_output
 ```
 Saves output files to a custom directory instead of the default `data/` folder.
 
-## Report Generation
+### Processing Commands
 
-### Detailed Reports (Always Generated)
-Reports are now **automatically generated** every time you run the CLI tool. The `--save-reports` flag is kept for backward compatibility but is no longer required.
+#### Process Favorites Only
+```bash
+python3 main.py --process-favorites
+```
+Processes favorites with priority-based logic to select best versions (MP4 over MP3).
+
+#### Process History Only
+```bash
+python3 main.py --process-history
+```
+Processes history with priority-based logic to select best versions (MP4 over MP3).
+
+#### Process Everything
+```bash
+python3 main.py --process-all
+```
+Processes everything: duplicates, generates reports, AND updates favorites/history with priority logic.
+
+#### Merge History Objects
+```bash
+python3 main.py --merge-history
+```
+Merges history objects that match on artist, title, and path, summing their count properties.
+
+### Report Generation
+
+#### Save Detailed Reports (Legacy)
+```bash
+python3 main.py --save-reports
+```
+**Note**: Reports are now automatically generated every time you run the CLI tool. This flag is kept for backward compatibility.
 
 Generated reports include:
 - `enhanced_summary_report.txt` - Comprehensive analysis
@@ -82,43 +122,244 @@ Generated reports include:
 - `analysis_data.json` - Raw analysis data for further processing
 - `skip_songs_detailed.json` - **Web UI data (always generated)**
 
-## Combined Examples
+## Playlist Validator Commands (playlist_validator.py)
 
-### Full Analysis with Reports
+### Basic Playlist Validation
+
+#### Validate All Playlists
 ```bash
-python cli/main.py --verbose
+python3 playlist_validator.py
 ```
-Runs complete analysis with:
+Validates all playlists in `data/songList.json` against the song library.
+
+#### Validate Specific Playlist
+```bash
+python3 playlist_validator.py --playlist-index 0
+```
+Validates a specific playlist by index (0-based).
+
+### Playlist Validator Options
+
+#### Custom Configuration
+```bash
+python3 playlist_validator.py --config path/to/custom_config.json
+```
+Uses a custom configuration file.
+
+#### Custom Data Directory
+```bash
+python3 playlist_validator.py --data-dir path/to/data
+```
+Uses a custom data directory.
+
+#### Apply Changes (Disable Dry Run)
+```bash
+python3 playlist_validator.py --apply
+```
+Applies changes to playlists instead of just previewing them.
+
+#### Output Results to File
+```bash
+python3 playlist_validator.py --output results.json
+```
+Saves validation results to a JSON file.
+
+## Comprehensive Examples
+
+### Complete Workflow Examples
+
+#### 1. Full Analysis with Everything
+```bash
+cd cli
+python3 main.py --process-all --verbose
+```
+Complete processing with detailed output:
+- Duplicate analysis and skip list generation
+- Favorites and history processing with priority logic
+- Comprehensive report generation
 - Verbose output for detailed processing information
-- **Automatic comprehensive report generation**
-- Skip list creation
 
-### Custom Configuration with Dry Run
+#### 2. Preview Changes Before Applying
 ```bash
-python cli/main.py --config custom_config.json --dry-run --verbose
+cd cli
+python3 main.py --process-all --dry-run --verbose
 ```
-Tests a custom configuration without generating files:
-- Uses custom configuration
+Preview all changes without saving:
+- Shows what would be processed
+- No files are modified
+- Useful for testing configuration changes
+
+#### 3. Custom Configuration Testing
+```bash
+cd cli
+python3 main.py --config custom_config.json --dry-run --verbose
+```
+Test a custom configuration:
+- Uses custom configuration file
 - Shows detailed processing
 - No output files created
 
-### Custom Input/Output with Reports
+#### 4. Process Only Favorites and History
 ```bash
-python cli/main.py --input /path/to/songs.json --output-dir ./reports
+cd cli
+python3 main.py --process-favorites --process-history
+```
+Process only favorites and history files:
+- Updates favorites with best versions (MP4 over MP3)
+- Updates history with best versions
+- No duplicate analysis performed
+
+#### 5. Merge History Objects
+```bash
+cd cli
+python3 main.py --merge-history --dry-run
+```
+Preview history merging:
+- Shows which history objects would be merged
+- No files are modified
+
+#### 6. Apply History Merging
+```bash
+cd cli
+python3 main.py --merge-history
+```
+Actually merge history objects:
+- Combines duplicate history entries
+- Sums count properties
+- Saves updated history file
+
+### Playlist Validation Examples
+
+#### 1. Validate All Playlists
+```bash
+cd cli
+python3 playlist_validator.py
+```
+Validates all playlists and shows summary:
+- Total playlists and songs
+- Exact matches found
+- Missing songs count
+- Fuzzy matches (if available)
+
+#### 2. Validate Specific Playlist
+```bash
+cd cli
+python3 playlist_validator.py --playlist-index 5
+```
+Validates playlist at index 5:
+- Shows detailed results for that specific playlist
+- Lists exact matches and missing songs
+
+#### 3. Save Validation Results
+```bash
+cd cli
+python3 playlist_validator.py --output validation_results.json
+```
+Saves detailed validation results to JSON file for further analysis.
+
+#### 4. Apply Playlist Corrections
+```bash
+cd cli
+python3 playlist_validator.py --apply
+```
+Applies corrections to playlists (use with caution).
+
+### Advanced Examples
+
+#### 1. Custom Input/Output with Full Processing
+```bash
+cd cli
+python3 main.py --input /path/to/songs.json --output-dir ./reports --process-all --verbose
 ```
 Processes custom input and saves all outputs to reports directory:
 - Custom input file
 - Custom output location
-- **All report files automatically generated**
+- Full processing including favorites/history
+- Verbose output
 
-### Minimal Output
+#### 2. Configuration Testing Workflow
 ```bash
-python cli/main.py --output-dir ./minimal
+cd cli
+# Show current configuration
+python3 main.py --show-config
+
+# Test with dry run
+python3 main.py --dry-run --verbose
+
+# Test with custom config
+python3 main.py --config test_config.json --dry-run --verbose
 ```
-Runs with minimal output:
-- No verbose logging
-- No detailed reports
-- Only generates skip list
+
+#### 3. Playlist Analysis Workflow
+```bash
+cd cli
+# Validate all playlists
+python3 playlist_validator.py
+
+# Validate specific playlist
+python3 playlist_validator.py --playlist-index 0
+
+# Save detailed results
+python3 playlist_validator.py --output playlist_analysis.json
+```
+
+#### 4. Complete System Analysis
+```bash
+cd cli
+# Process everything
+python3 main.py --process-all --verbose
+
+# Validate playlists
+python3 playlist_validator.py
+
+# Show configuration
+python3 main.py --show-config
+```
+
+## Command Line Options Reference
+
+### Main CLI (main.py) Options
+
+| Option | Description | Default |
+|--------|-------------|---------|
+| `--config` | Configuration file path | `../config/config.json` |
+| `--input` | Input songs file path | `../data/songs.json` |
+| `--output-dir` | Output directory | `../data` |
+| `--verbose, -v` | Enable verbose output | `False` |
+| `--dry-run` | Analyze without generating files | `False` |
+| `--save-reports` | Save detailed reports | `True` (always enabled) |
+| `--show-config` | Show configuration and exit | `False` |
+| `--process-favorites` | Process favorites with priority logic | `False` |
+| `--process-history` | Process history with priority logic | `False` |
+| `--process-all` | Process everything | `False` |
+| `--merge-history` | Merge history objects | `False` |
+
+### Playlist Validator (playlist_validator.py) Options
+
+| Option | Description | Default |
+|--------|-------------|---------|
+| `--config` | Configuration file path | `../config/config.json` |
+| `--data-dir` | Data directory path | `../data` |
+| `--dry-run` | Dry run mode | `True` |
+| `--apply` | Apply changes (disable dry run) | `False` |
+| `--playlist-index` | Validate specific playlist by index | `None` |
+| `--output` | Output results to JSON file | `None` |
+
+## File Structure Requirements
+
+### Required Files
+- `data/songs.json` - Main song library
+- `config/config.json` - Configuration settings
+
+### Optional Files
+- `data/favorites.json` - Favorites list (for processing)
+- `data/history.json` - History list (for processing)
+- `data/songList.json` - Playlists (for validation)
+
+### Generated Files
+- `data/skipSongs.json` - Skip list for future imports
+- `data/reports/` - Directory containing all analysis reports
+- `data/preferences/` - Directory containing priority preferences
 
 ## Configuration File Structure
 
@@ -148,31 +389,9 @@ The default configuration file (`config/config.json`) contains:
 }
 ```
 
-### Configuration Options Explained
-
-#### Channel Priorities
-- **channel_priorities**: Array of folder names for MP4 files
-- Order determines priority (first = highest priority)
-- Files without matching folders are marked for manual review
-
-#### Matching Settings
-- **fuzzy_matching**: Enable/disable fuzzy string matching
-- **fuzzy_threshold**: Similarity threshold (0.0-1.0) for fuzzy matching
-- **case_sensitive**: Case-sensitive artist/title comparison
-
-#### Output Settings
-- **verbose**: Enable detailed output
-- **include_reasons**: Include reason field in skip list
-- **max_duplicates_per_song**: Maximum duplicates to process per song
-
-#### File Type Settings
-- **supported_extensions**: All supported file extensions
-- **mp4_extensions**: Extensions treated as MP4 files
-
-## Input File Format
-
-The tool expects a JSON array of song objects:
+## Input File Formats
 
+### Song Library Format (songs.json)
 ```json
 [
   {
@@ -183,9 +402,45 @@ The tool expects a JSON array of song objects:
 ]
 ```
 
-Optional fields for MP4 files:
-- `channel`: Channel/folder information
-- ID3 tag information (artist, title, etc.)
+### Playlist Format (songList.json)
+```json
+[
+  {
+    "title": "Playlist Name",
+    "songs": [
+      {
+        "position": 1,
+        "artist": "Artist Name",
+        "title": "Song Title"
+      }
+    ]
+  }
+]
+```
+
+### Favorites Format (favorites.json)
+```json
+[
+  {
+    "artist": "Artist Name",
+    "title": "Song Title",
+    "path": "path/to/file.mp3",
+    "favorite": true
+  }
+]
+```
+
+### History Format (history.json)
+```json
+[
+  {
+    "artist": "Artist Name",
+    "title": "Song Title",
+    "path": "path/to/file.mp3",
+    "count": 5
+  }
+]
+```
 
 ## Output Files
 
@@ -193,7 +448,7 @@ Optional fields for MP4 files:
 - **skipSongs.json**: List of file paths to skip in future imports
 - Format: `[{"path": "file/path.mp3", "reason": "duplicate"}]`
 
-### Report Files (with --save-reports)
+### Report Files (Automatically Generated)
 - **enhanced_summary_report.txt**: Overall analysis and statistics
 - **channel_optimization_report.txt**: Channel priority suggestions
 - **duplicate_pattern_report.txt**: Duplicate detection patterns
@@ -222,7 +477,7 @@ The tool provides clear error messages for:
 
 ## Performance Notes
 
-- Successfully tested with 37,000+ songs
+- Successfully tested with 49,000+ songs
 - Processes large datasets efficiently
 - Shows progress indicators for long operations
 - Memory-efficient processing
@@ -245,17 +500,29 @@ The CLI tool integrates with the web UI:
 
 ### Debug Mode
 ```bash
-python cli/main.py --verbose --dry-run --show-config
+cd cli
+python3 main.py --verbose --dry-run --show-config
 ```
 Complete debugging setup:
 - Shows configuration
 - Verbose processing
 - No file changes
 
+### Playlist Validator Debug
+```bash
+cd cli
+python3 playlist_validator.py --dry-run --output debug_results.json
+```
+Debug playlist validation:
+- Dry run mode
+- Save results to file
+- No playlist modifications
+
 ## Version Information
 
 This commands reference is for Karaoke Song Library Cleanup Tool v2.0
 - CLI: Fully functional with comprehensive options
 - Web UI: Interactive priority management
 - Priority System: Drag-and-drop with persistence
-- Reports: Enhanced analysis with actionable insights 
+- Reports: Enhanced analysis with actionable insights
+- Playlist Validator: Complete playlist analysis and validation 

cli/main.py

@@ -15,6 +15,192 @@ from matching import SongMatcher
 from report import ReportGenerator
 
 
+def merge_history_objects(data_dir: str, args) -> None:
+    """Merge history objects that match on artist, title, and path, summing their count properties."""
+    history_path = os.path.join(data_dir, 'history.json')
+    
+    if not os.path.exists(history_path):
+        print(f"History file not found: {history_path}")
+        return
+    
+    try:
+        # Load current history
+        history_items = load_json_file(history_path)
+        if not history_items:
+            print("No history items found to merge")
+            return
+        
+        print(f"\n🔄 Merging history objects...")
+        print(f"Processing {len(history_items):,} history entries...")
+        
+        # Create a dictionary to group items by artist, title, and path
+        grouped_items = {}
+        merged_count = 0
+        total_merged_entries = 0
+        
+        for item in history_items:
+            if not isinstance(item, dict):
+                continue
+                
+            artist = item.get('artist', '').strip()
+            title = item.get('title', '').strip()
+            path = item.get('path', '').strip()
+            
+            if not artist or not title or not path:
+                continue
+            
+            # Create a key for grouping
+            key = (artist.lower(), title.lower(), path.lower())
+            
+            if key not in grouped_items:
+                grouped_items[key] = []
+            grouped_items[key].append(item)
+        
+        # Process groups with multiple items
+        merged_items = []
+        
+        for key, items in grouped_items.items():
+            if len(items) == 1:
+                # Single item, keep as is
+                merged_items.append(items[0])
+            else:
+                # Multiple items, merge them
+                artist, title, path = key
+                
+                # Start with the first item as the base
+                merged_item = items[0].copy()
+                
+                # Sum the counts (handle both int and string values)
+                total_count = 0
+                for item in items:
+                    count_value = item.get('count', 0)
+                    if isinstance(count_value, str):
+                        try:
+                            total_count += int(count_value)
+                        except ValueError:
+                            total_count += 0
+                    else:
+                        total_count += count_value
+                merged_item['count'] = total_count
+                
+                # For boolean properties, if any are True, keep True
+                merged_item['favorite'] = any(item.get('favorite', False) for item in items)
+                merged_item['disabled'] = any(item.get('disabled', False) for item in items)
+                
+                # For other properties, keep the first non-empty value
+                for prop in ['key', 'original_path', 'genre']:
+                    if prop in merged_item and merged_item[prop]:
+                        continue
+                    for item in items[1:]:  # Skip first item since we already have it
+                        if item.get(prop):
+                            merged_item[prop] = item[prop]
+                            break
+                
+                merged_items.append(merged_item)
+                merged_count += 1
+                total_merged_entries += len(items)
+                
+                if args.verbose:
+                    print(f"Merged {len(items)} entries for '{artist} - {title}': total count = {total_count}")
+        
+        # Save the merged history
+        if not args.dry_run:
+            save_json_file(merged_items, history_path)
+            print(f"✅ Merged {merged_count} groups ({total_merged_entries} total entries → {len(merged_items)} entries)")
+            print(f"📁 Saved to: {history_path}")
+        else:
+            print(f"DRY RUN: Would merge {merged_count} groups ({total_merged_entries} total entries → {len(merged_items)} entries)")
+        
+    except Exception as e:
+        print(f"Error merging history objects: {e}")
+
+
+def process_favorites_and_history(matcher: SongMatcher, all_songs: List[Dict[str, Any]], data_dir: str, args) -> None:
+    """Process favorites and history with priority-based logic to select best versions."""
+    
+    def process_file(file_type: str, file_path: str) -> List[Dict[str, Any]]:
+        """Process a single favorites or history file."""
+        try:
+            items = load_json_file(file_path)
+            if not items:
+                print(f"No {file_type} found in {file_path}")
+                return []
+            
+            print(f"\nProcessing {len(items):,} {file_type} entries...")
+            
+            # Find matching songs for each item
+            processed_items = []
+            updated_count = 0
+            
+            for i, item in enumerate(items):
+                if not isinstance(item, dict):
+                    print(f"Warning: Skipping invalid {file_type} item at index {i}")
+                    continue
+                
+                artist = item.get('artist', '')
+                title = item.get('title', '')
+                current_path = item.get('path', '')
+                
+                if not artist or not title:
+                    print(f"Warning: Skipping {file_type} item with missing artist/title at index {i}")
+                    continue
+                
+                # Find all matching songs for this artist/title
+                matching_songs = []
+                for song in all_songs:
+                    if (song.get('artist', '').lower().strip() == artist.lower().strip() and 
+                        song.get('title', '').lower().strip() == title.lower().strip()):
+                        matching_songs.append(song)
+                
+                if not matching_songs:
+                    print(f"Warning: No matching songs found for {artist} - {title}")
+                    processed_items.append(item)
+                    continue
+                
+                # Use the same priority logic as duplicates
+                best_song, skip_songs = matcher.select_best_song(matching_songs, artist, title)
+                
+                if best_song and best_song['path'] != current_path:
+                    # Update the path to the best version
+                    item['path'] = best_song['path']
+                    item['original_path'] = current_path  # Keep track of the original
+                    updated_count += 1
+                    if args.verbose:
+                        print(f"Updated {artist} - {title}: {current_path} → {best_song['path']}")
+                
+                processed_items.append(item)
+            
+            # Save the updated file
+            if not args.dry_run:
+                save_json_file(processed_items, file_path)
+                print(f"✅ Updated {updated_count:,} {file_type} entries with best versions")
+                print(f"📁 Saved to: {file_path}")
+            else:
+                print(f"DRY RUN: Would update {updated_count:,} {file_type} entries")
+            
+            return processed_items
+            
+        except Exception as e:
+            print(f"Error processing {file_type}: {e}")
+            return []
+    
+    # Process favorites if requested
+    if args.process_favorites:
+        favorites_path = os.path.join(data_dir, 'favorites.json')
+        if os.path.exists(favorites_path):
+            process_file('favorites', favorites_path)
+        else:
+            print(f"Favorites file not found: {favorites_path}")
+    
+    # Process history if requested
+    if args.process_history:
+        history_path = os.path.join(data_dir, 'history.json')
+        if os.path.exists(history_path):
+            process_file('history', history_path)
+        else:
+            print(f"History file not found: {history_path}")
+
+
 def parse_arguments():
     """Parse command line arguments."""
     parser = argparse.ArgumentParser(
@@ -27,25 +213,31 @@ Examples:
   python main.py --config custom_config.json        # Use custom config
   python main.py --output-dir ./reports             # Save reports to custom directory
   python main.py --dry-run                          # Analyze without generating files
+  python main.py --process-favorites                # Process favorites with priority logic (MP4 over MP3)
+  python main.py --process-history                  # Process history with priority logic (MP4 over MP4)
+  python main.py --process-all                      # Process everything: duplicates, generate reports, AND update favorites/history with priority logic
+  python main.py --process-all --dry-run            # Preview changes without saving
+  python main.py --merge-history                    # Merge history objects that match on artist, title, and path
+  python main.py --merge-history --dry-run          # Preview history merging without saving
         """
     )
     
     parser.add_argument(
         '--config', 
-        default='config/config.json',
-        help='Path to configuration file (default: config/config.json)'
+        default='../config/config.json',
+        help='Path to configuration file (default: ../config/config.json)'
     )
     
     parser.add_argument(
         '--input', 
-        default='data/allSongs.json',
-        help='Path to input songs file (default: data/allSongs.json)'
+        default=None,
+        help='Path to input songs file (default: auto-detected from config)'
     )
     
     parser.add_argument(
         '--output-dir', 
-        default='data',
-        help='Directory for output files (default: data)'
+        default=None,
+        help='Directory for output files (default: auto-detected from config)'
     )
     
     parser.add_argument(
@@ -72,6 +264,30 @@ Examples:
         help='Show current configuration and exit'
     )
     
+    parser.add_argument(
+        '--process-favorites',
+        action='store_true',
+        help='Process favorites with priority-based logic to select best versions (MP4 over MP3)'
+    )
+    
+    parser.add_argument(
+        '--process-history',
+        action='store_true',
+        help='Process history with priority-based logic to select best versions (MP4 over MP3)'
+    )
+    
+    parser.add_argument(
+        '--process-all',
+        action='store_true',
+        help='Process everything: duplicates, generate reports, AND update favorites/history with priority logic'
+    )
+    
+    parser.add_argument(
+        '--merge-history',
+        action='store_true',
+        help='Merge history objects that match on artist, title, and path, summing their count properties'
+    )
+    
     return parser.parse_args()
 
 
@@ -119,137 +335,178 @@ def main():
         reporter.print_report("config", config)
         return
     
-    # Load songs
-    songs = load_songs(args.input)
+    # Determine data directory and input file from config or args
+    data_dir = args.output_dir or config.get('data_directory', '../data')
+    # Resolve relative paths from CLI directory
+    if not os.path.isabs(data_dir):
+        data_dir = os.path.join(os.path.dirname(__file__), '..', data_dir)
+    input_file = args.input or os.path.join(data_dir, 'songs.json')
     
-    # Initialize components
-    data_dir = args.output_dir
-    matcher = SongMatcher(config, data_dir)
-    reporter = ReportGenerator(config)
+    # Load songs (only if needed for processing)
+    songs = None
+    matcher = None
+    reporter = None
     
-    print("\nStarting song analysis...")
-    print("=" * 60)
+    if not args.merge_history:
+        songs = load_songs(input_file)
+        matcher = SongMatcher(config, data_dir)
+        reporter = ReportGenerator(config)
     
-    # Process songs
-    try:
-        best_songs, skip_songs, stats = matcher.process_songs(songs)
+    # Process favorites and history if requested
+    if args.process_favorites or args.process_history or args.process_all:
+        print("\n🎯 Processing favorites and history with priority logic...")
+        print("=" * 60)
         
-        # Generate reports
+        # If --process-all is used, set both flags
+        if args.process_all:
+            args.process_favorites = True
+            args.process_history = True
+        
+        process_favorites_and_history(matcher, songs, data_dir, args)
         print("\n" + "=" * 60)
-        reporter.print_report("summary", stats)
+        print("Favorites/History processing complete!")
         
-        # Add channel priority report
-        if config.get('channel_priorities'):
-            channel_report = reporter.generate_channel_priority_report(stats, config['channel_priorities'])
-            print("\n" + channel_report)
+        # If --process-all, also do the full duplicate analysis and reporting
+        if args.process_all:
+            print("\n🔄 Processing duplicates and generating reports...")
+            print("=" * 60)
+        else:
+            return
+    
+    # Merge history objects if requested (separate operation)
+    if args.merge_history:
+        print("\n🔄 Merging history objects...")
+        print("=" * 60)
+        merge_history_objects(data_dir, args)
+        print("\n" + "=" * 60)
+        print("History merging complete!")
+        return
+    
+    # If not processing favorites/history OR if --process-all, do the full analysis
+    if not (args.process_favorites or args.process_history) or args.process_all:
+        print("\nStarting song analysis...")
+        print("=" * 60)
         
-        if config['output']['verbose']:
-            duplicate_info = matcher.get_detailed_duplicate_info(songs)
-            reporter.print_report("duplicates", duplicate_info)
-        
-        reporter.print_report("skip_summary", skip_songs)
-        
-        # Save skip list if not dry run
-        if not args.dry_run and skip_songs:
-            skip_list_path = os.path.join(args.output_dir, 'skipSongs.json')
+        # Process songs
+        try:
+            best_songs, skip_songs, stats = matcher.process_songs(songs)
             
-            # Create simplified skip list (just paths and reasons) with deduplication
-            seen_paths = set()
-            simple_skip_list = []
-            duplicate_count = 0
+            # Generate reports
+            print("\n" + "=" * 60)
+            reporter.print_report("summary", stats)
             
-            for skip_song in skip_songs:
-                path = skip_song['path']
-                if path not in seen_paths:
-                    seen_paths.add(path)
-                    skip_entry = {'path': path}
-                    if config['output']['include_reasons']:
-                        skip_entry['reason'] = skip_song['reason']
-                    simple_skip_list.append(skip_entry)
-                else:
-                    duplicate_count += 1
+            # Add channel priority report
+            if config.get('channel_priorities'):
+                channel_report = reporter.generate_channel_priority_report(stats, config['channel_priorities'])
+                print("\n" + channel_report)
             
-            save_json_file(simple_skip_list, skip_list_path)
-            print(f"\nSkip list saved to: {skip_list_path}")
-            print(f"Total songs to skip: {len(simple_skip_list):,}")
-            if duplicate_count > 0:
-                print(f"Removed {duplicate_count:,} duplicate entries from skip list")
-        elif args.dry_run:
-            print("\nDRY RUN MODE: No skip list generated")
-        
-        # Always generate detailed reports (not just when --save-reports is used)
-        if not args.dry_run:
-            reports_dir = os.path.join(args.output_dir, 'reports')
-            os.makedirs(reports_dir, exist_ok=True)
-            
-            print(f"\n📊 Generating enhanced analysis reports...")
-            
-            # Analyze skip patterns
-            skip_analysis = reporter.analyze_skip_patterns(skip_songs)
-            
-            # Analyze channel optimization
-            channel_analysis = reporter.analyze_channel_optimization(stats, skip_analysis)
-            
-            # Generate and save enhanced reports
-            enhanced_summary = reporter.generate_enhanced_summary_report(stats, skip_analysis)
-            reporter.save_report_to_file(enhanced_summary, os.path.join(reports_dir, 'enhanced_summary_report.txt'))
-            
-            channel_optimization = reporter.generate_channel_optimization_report(channel_analysis)
-            reporter.save_report_to_file(channel_optimization, os.path.join(reports_dir, 'channel_optimization_report.txt'))
-            
-            duplicate_patterns = reporter.generate_duplicate_pattern_report(skip_analysis)
-            reporter.save_report_to_file(duplicate_patterns, os.path.join(reports_dir, 'duplicate_pattern_report.txt'))
-            
-            actionable_insights = reporter.generate_actionable_insights_report(stats, skip_analysis, channel_analysis)
-            reporter.save_report_to_file(actionable_insights, os.path.join(reports_dir, 'actionable_insights_report.txt'))
-            
-            # Generate detailed duplicate analysis
-            detailed_duplicates = reporter.generate_detailed_duplicate_analysis(skip_songs, best_songs)
-            reporter.save_report_to_file(detailed_duplicates, os.path.join(reports_dir, 'detailed_duplicate_analysis.txt'))
-            
-            # Save original reports for compatibility
-            summary_report = reporter.generate_summary_report(stats)
-            reporter.save_report_to_file(summary_report, os.path.join(reports_dir, 'summary_report.txt'))
-            
-            skip_report = reporter.generate_skip_list_summary(skip_songs)
-            reporter.save_report_to_file(skip_report, os.path.join(reports_dir, 'skip_list_summary.txt'))
-            
-            # Save detailed duplicate report if verbose
             if config['output']['verbose']:
                 duplicate_info = matcher.get_detailed_duplicate_info(songs)
-                duplicate_report = reporter.generate_duplicate_details(duplicate_info)
-                reporter.save_report_to_file(duplicate_report, os.path.join(reports_dir, 'duplicate_details.txt'))
+                reporter.print_report("duplicates", duplicate_info)
             
-            # Save analysis data as JSON for further processing
-            analysis_data = {
-                'stats': stats,
-                'skip_analysis': skip_analysis,
-                'channel_analysis': channel_analysis,
-                'timestamp': __import__('datetime').datetime.now().isoformat()
-            }
-            save_json_file(analysis_data, os.path.join(reports_dir, 'analysis_data.json'))
+            reporter.print_report("skip_summary", skip_songs)
             
-            # Save full skip list data (this is what the web UI needs)
-            save_json_file(skip_songs, os.path.join(reports_dir, 'skip_songs_detailed.json'))
+            # Save skip list if not dry run
+            if not args.dry_run and skip_songs:
+                skip_list_path = os.path.join(data_dir, 'skipSongs.json')
+                
+                # Create simplified skip list (just paths and reasons) with deduplication
+                seen_paths = set()
+                simple_skip_list = []
+                duplicate_count = 0
+                
+                for skip_song in skip_songs:
+                    path = skip_song['path']
+                    if path not in seen_paths:
+                        seen_paths.add(path)
+                        skip_entry = {'path': path}
+                        if config['output']['include_reasons']:
+                            skip_entry['reason'] = skip_song['reason']
+                        simple_skip_list.append(skip_entry)
+                    else:
+                        duplicate_count += 1
+                
+                save_json_file(simple_skip_list, skip_list_path)
+                print(f"\nSkip list saved to: {skip_list_path}")
+                print(f"Total songs to skip: {len(simple_skip_list):,}")
+                if duplicate_count > 0:
+                    print(f"Removed {duplicate_count:,} duplicate entries from skip list")
+            elif args.dry_run:
+                print("\nDRY RUN MODE: No skip list generated")
             
-            print(f"✅ Enhanced reports saved to: {reports_dir}")
-            print(f"📋 Generated reports:")
-            print(f"   • enhanced_summary_report.txt - Comprehensive analysis")
-            print(f"   • channel_optimization_report.txt - Priority optimization suggestions")
-            print(f"   • duplicate_pattern_report.txt - Duplicate pattern analysis")
-            print(f"   • actionable_insights_report.txt - Recommendations and insights")
-            print(f"   • detailed_duplicate_analysis.txt - Specific songs and their duplicates")
-            print(f"   • analysis_data.json - Raw analysis data for further processing")
-            print(f"   • skip_songs_detailed.json - Web UI data (always generated)")
-        elif args.dry_run:
-            print("\nDRY RUN MODE: No reports generated")
-        
-        print("\n" + "=" * 60)
-        print("Analysis complete!")
-        
-    except Exception as e:
-        print(f"\nError during processing: {e}")
-        sys.exit(1)
+            # Always generate detailed reports (not just when --save-reports is used)
+            if not args.dry_run:
+                reports_dir = os.path.join(data_dir, 'reports')
+                os.makedirs(reports_dir, exist_ok=True)
+                
+                print(f"\n📊 Generating enhanced analysis reports...")
+                
+                # Analyze skip patterns
+                skip_analysis = reporter.analyze_skip_patterns(skip_songs)
+                
+                # Analyze channel optimization
+                channel_analysis = reporter.analyze_channel_optimization(stats, skip_analysis)
+                
+                # Generate and save enhanced reports
+                enhanced_summary = reporter.generate_enhanced_summary_report(stats, skip_analysis)
+                reporter.save_report_to_file(enhanced_summary, os.path.join(reports_dir, 'enhanced_summary_report.txt'))
+                
+                channel_optimization = reporter.generate_channel_optimization_report(channel_analysis)
+                reporter.save_report_to_file(channel_optimization, os.path.join(reports_dir, 'channel_optimization_report.txt'))
+                
+                duplicate_patterns = reporter.generate_duplicate_pattern_report(skip_analysis)
+                reporter.save_report_to_file(duplicate_patterns, os.path.join(reports_dir, 'duplicate_pattern_report.txt'))
+                
+                actionable_insights = reporter.generate_actionable_insights_report(stats, skip_analysis, channel_analysis)
+                reporter.save_report_to_file(actionable_insights, os.path.join(reports_dir, 'actionable_insights_report.txt'))
+                
+                # Generate detailed duplicate analysis
+                detailed_duplicates = reporter.generate_detailed_duplicate_analysis(skip_songs, best_songs)
+                reporter.save_report_to_file(detailed_duplicates, os.path.join(reports_dir, 'detailed_duplicate_analysis.txt'))
+                
+                # Save original reports for compatibility
+                summary_report = reporter.generate_summary_report(stats)
+                reporter.save_report_to_file(summary_report, os.path.join(reports_dir, 'summary_report.txt'))
+                
+                skip_report = reporter.generate_skip_list_summary(skip_songs)
+                reporter.save_report_to_file(skip_report, os.path.join(reports_dir, 'skip_list_summary.txt'))
+                
+                # Save detailed duplicate report if verbose
+                if config['output']['verbose']:
+                    duplicate_info = matcher.get_detailed_duplicate_info(songs)
+                    duplicate_report = reporter.generate_duplicate_details(duplicate_info)
+                    reporter.save_report_to_file(duplicate_report, os.path.join(reports_dir, 'duplicate_details.txt'))
+                
+                # Save analysis data as JSON for further processing
+                analysis_data = {
+                    'stats': stats,
+                    'skip_analysis': skip_analysis,
+                    'channel_analysis': channel_analysis,
+                    'timestamp': __import__('datetime').datetime.now().isoformat()
+                }
+                save_json_file(analysis_data, os.path.join(reports_dir, 'analysis_data.json'))
+                
+                # Save full skip list data (this is what the web UI needs)
+                save_json_file(skip_songs, os.path.join(reports_dir, 'skip_songs_detailed.json'))
+                
+                print(f"✅ Enhanced reports saved to: {reports_dir}")
+                print(f"📋 Generated reports:")
+                print(f"   • enhanced_summary_report.txt - Comprehensive analysis")
+                print(f"   • channel_optimization_report.txt - Priority optimization suggestions")
+                print(f"   • duplicate_pattern_report.txt - Duplicate pattern analysis")
+                print(f"   • actionable_insights_report.txt - Recommendations and insights")
+                print(f"   • detailed_duplicate_analysis.txt - Specific songs and their duplicates")
+                print(f"   • analysis_data.json - Raw analysis data for further processing")
+                print(f"   • skip_songs_detailed.json - Web UI data (always generated)")
+            elif args.dry_run:
+                print("\nDRY RUN MODE: No reports generated")
+            
+            print("\n" + "=" * 60)
+            print("Analysis complete!")
+            
+        except Exception as e:
+            print(f"\nError during processing: {e}")
+            sys.exit(1)
 
 
 if __name__ == "__main__":

cli/matching.py

@@ -17,6 +17,7 @@ from utils import (
     extract_consolidated_channel_from_path,
     get_file_extension,
     parse_multi_artist,
+    clean_artist_name,
     validate_song_data,
     find_mp3_pairs
 )
@@ -63,10 +64,15 @@ class SongMatcher:
                 if not validate_song_data(song):
                     continue
                     
-                # Handle multi-artist songs
-                artists = parse_multi_artist(song['artist'])
+                # Clean and handle artist names
+                cleaned_artist = clean_artist_name(song['artist'])
+                if not cleaned_artist:
+                    cleaned_artist = song['artist']  # Fallback to original if cleaning fails
+                
+                # Handle multi-artist songs (after cleaning)
+                artists = parse_multi_artist(cleaned_artist)
                 if not artists:
-                    artists = [song['artist']]
+                    artists = [cleaned_artist]
                 
                 # Create groups for each artist variation
                 for artist in artists:
@@ -90,10 +96,15 @@ class SongMatcher:
                 if i % 1000 == 0 and i > 0:
                     print(f"Processing song {i:,}/{len(songs):,}...")
                 
-                # Handle multi-artist songs
-                artists = parse_multi_artist(song['artist'])
+                # Clean and handle artist names
+                cleaned_artist = clean_artist_name(song['artist'])
+                if not cleaned_artist:
+                    cleaned_artist = song['artist']  # Fallback to original if cleaning fails
+                
+                # Handle multi-artist songs (after cleaning)
+                artists = parse_multi_artist(cleaned_artist)
                 if not artists:
-                    artists = [song['artist']]
+                    artists = [cleaned_artist]
                 
                 # Try exact matching first
                 added_to_exact = False
@@ -117,10 +128,15 @@ class SongMatcher:
                 if i % 100 == 0 and i > 0:
                     print(f"Fuzzy matching song {i:,}/{len(ungrouped_songs):,}...")
                 
-                # Handle multi-artist songs
-                artists = parse_multi_artist(song['artist'])
+                # Clean and handle artist names
+                cleaned_artist = clean_artist_name(song['artist'])
+                if not cleaned_artist:
+                    cleaned_artist = song['artist']  # Fallback to original if cleaning fails
+                
+                # Handle multi-artist songs (after cleaning)
+                artists = parse_multi_artist(cleaned_artist)
                 if not artists:
-                    artists = [song['artist']]
+                    artists = [cleaned_artist]
                 
                 # Try to find an existing fuzzy group
                 added_to_group = False

cli/playlist_validator.py

@@ -0,0 +1,350 @@
+#!/usr/bin/env python3
+"""
+Playlist validation module for the Karaoke Song Library Cleanup Tool.
+Validates playlist songs against the song library using exact and fuzzy matching.
+"""
+
+import json
+import os
+from typing import Dict, List, Any, Tuple, Optional
+from collections import defaultdict
+import difflib
+
+try:
+    from fuzzywuzzy import fuzz
+    FUZZY_AVAILABLE = True
+except ImportError:
+    FUZZY_AVAILABLE = False
+
+from utils import (
+    normalize_artist_title,
+    extract_channel_from_path,
+    get_file_extension,
+    parse_multi_artist,
+    clean_artist_name,
+    validate_song_data
+)
+
+from matching import SongMatcher
+
+
+class PlaylistValidator:
+    """Validates playlist songs against the song library."""
+    
+    def __init__(self, config: Dict[str, Any], data_dir: str = "../data"):
+        self.config = config
+        self.data_dir = data_dir
+        self.song_matcher = SongMatcher(config, data_dir)
+        self.fuzzy_threshold = config.get('matching', {}).get('fuzzy_threshold', 0.8)
+        
+        # Load song library
+        self.all_songs = self._load_all_songs()
+        if not self.all_songs:
+            raise ValueError("Could not load song library from allSongs.json")
+        
+        # Create lookup dictionaries for faster matching
+        self._build_lookup_tables()
+    
+    def _load_all_songs(self) -> List[Dict[str, Any]]:
+        """Load the song library from songs.json."""
+        all_songs_path = os.path.join(self.data_dir, 'songs.json')
+        try:
+            with open(all_songs_path, 'r', encoding='utf-8') as f:
+                return json.load(f)
+        except Exception as e:
+            print(f"Error loading song library: {e}")
+            return []
+    
+    def _build_lookup_tables(self):
+        """Build lookup tables for faster exact matching."""
+        self.exact_lookup = {}
+        self.artist_title_lookup = {}
+        
+        for song in self.all_songs:
+            if not validate_song_data(song):
+                continue
+            
+            # Clean and handle artist names
+            cleaned_artist = clean_artist_name(song['artist'])
+            if not cleaned_artist:
+                cleaned_artist = song['artist']  # Fallback to original if cleaning fails
+            
+            # Handle multi-artist songs (after cleaning)
+            artists = parse_multi_artist(cleaned_artist)
+            if not artists:
+                artists = [cleaned_artist]
+            
+            # Create exact match keys
+            for artist in artists:
+                normalized_key = normalize_artist_title(artist, song['title'], False)
+                if normalized_key not in self.exact_lookup:
+                    self.exact_lookup[normalized_key] = []
+                self.exact_lookup[normalized_key].append(song)
+                
+                # Also store by artist-title for fuzzy matching
+                artist_title_key = f"{artist.lower()} - {song['title'].lower()}"
+                if artist_title_key not in self.artist_title_lookup:
+                    self.artist_title_lookup[artist_title_key] = []
+                self.artist_title_lookup[artist_title_key].append(song)
+    
+    def find_exact_match(self, artist: str, title: str) -> Optional[List[Dict[str, Any]]]:
+        """Find exact matches for artist/title combination."""
+        normalized_key = normalize_artist_title(artist, title, False)
+        return self.exact_lookup.get(normalized_key, [])
+    
+    def find_fuzzy_matches(self, artist: str, title: str, threshold: float = None) -> List[Tuple[Dict[str, Any], float]]:
+        """Find fuzzy matches for artist/title combination."""
+        if not FUZZY_AVAILABLE:
+            return []
+        
+        if threshold is None:
+            threshold = self.fuzzy_threshold
+        
+        query = f"{artist.lower()} - {title.lower()}"
+        matches = []
+        
+        for key, songs in self.artist_title_lookup.items():
+            similarity = fuzz.ratio(query, key) / 100.0
+            if similarity >= threshold:
+                # Get the best song from this group using existing priority logic
+                best_song, _ = self.song_matcher.select_best_song(songs, artist, title)
+                matches.append((best_song, similarity))
+        
+        # Sort by similarity score (highest first)
+        matches.sort(key=lambda x: x[1], reverse=True)
+        return matches
+    
+    def validate_playlist(self, playlist: Dict[str, Any], dry_run: bool = True) -> Dict[str, Any]:
+        """Validate a single playlist against the song library."""
+        results = {
+            'playlist_title': playlist.get('title', 'Unknown Playlist'),
+            'total_songs': len(playlist.get('songs', [])),
+            'exact_matches': [],
+            'fuzzy_matches': [],
+            'missing_songs': [],
+            'summary': {
+                'exact_match_count': 0,
+                'fuzzy_match_count': 0,
+                'missing_count': 0,
+                'needs_manual_review': 0
+            }
+        }
+        
+        for song in playlist.get('songs', []):
+            artist = song.get('artist', '')
+            title = song.get('title', '')
+            position = song.get('position', 0)
+            
+            if not artist or not title:
+                results['missing_songs'].append({
+                    'position': position,
+                    'artist': artist,
+                    'title': title,
+                    'reason': 'Missing artist or title'
+                })
+                results['summary']['missing_count'] += 1
+                continue
+            
+            # Try exact match first
+            exact_matches = self.find_exact_match(artist, title)
+            
+            if exact_matches:
+                # Get the best song using existing priority logic
+                best_song, _ = self.song_matcher.select_best_song(exact_matches, artist, title)
+                
+                results['exact_matches'].append({
+                    'position': position,
+                    'playlist_artist': artist,
+                    'playlist_title': title,
+                    'found_song': best_song,
+                    'match_type': 'exact'
+                })
+                results['summary']['exact_match_count'] += 1
+                
+            else:
+                # Try fuzzy matching
+                fuzzy_matches = self.find_fuzzy_matches(artist, title)
+                
+                if fuzzy_matches:
+                    best_fuzzy_song, similarity = fuzzy_matches[0]
+                    
+                    results['fuzzy_matches'].append({
+                        'position': position,
+                        'playlist_artist': artist,
+                        'playlist_title': title,
+                        'found_song': best_fuzzy_song,
+                        'similarity': similarity,
+                        'match_type': 'fuzzy',
+                        'needs_manual_review': True
+                    })
+                    results['summary']['fuzzy_match_count'] += 1
+                    results['summary']['needs_manual_review'] += 1
+                    
+                else:
+                    results['missing_songs'].append({
+                        'position': position,
+                        'artist': artist,
+                        'title': title,
+                        'reason': 'No matches found'
+                    })
+                    results['summary']['missing_count'] += 1
+        
+        return results
+    
+    def validate_all_playlists(self, dry_run: bool = True) -> Dict[str, Any]:
+        """Validate all playlists in songList.json."""
+        playlists_path = os.path.join(self.data_dir, 'songList.json')
+        
+        try:
+            with open(playlists_path, 'r', encoding='utf-8') as f:
+                playlists = json.load(f)
+        except Exception as e:
+            print(f"Error loading playlists: {e}")
+            return {}
+        
+        all_results = {
+            'total_playlists': len(playlists),
+            'playlist_results': [],
+            'overall_summary': {
+                'total_songs': 0,
+                'exact_matches': 0,
+                'fuzzy_matches': 0,
+                'missing_songs': 0,
+                'needs_manual_review': 0
+            }
+        }
+        
+        for playlist in playlists:
+            result = self.validate_playlist(playlist, dry_run)
+            all_results['playlist_results'].append(result)
+            
+            # Update overall summary
+            summary = result['summary']
+            all_results['overall_summary']['total_songs'] += result['total_songs']
+            all_results['overall_summary']['exact_matches'] += summary['exact_match_count']
+            all_results['overall_summary']['fuzzy_matches'] += summary['fuzzy_match_count']
+            all_results['overall_summary']['missing_songs'] += summary['missing_count']
+            all_results['overall_summary']['needs_manual_review'] += summary['needs_manual_review']
+        
+        return all_results
+    
+    def update_playlist_song(self, playlist_index: int, song_position: int, 
+                           new_artist: str, new_title: str, dry_run: bool = True) -> bool:
+        """Update a playlist song with corrected artist/title."""
+        playlists_path = os.path.join(self.data_dir, 'songList.json')
+        
+        try:
+            with open(playlists_path, 'r', encoding='utf-8') as f:
+                playlists = json.load(f)
+        except Exception as e:
+            print(f"Error loading playlists: {e}")
+            return False
+        
+        if playlist_index >= len(playlists):
+            print(f"Invalid playlist index: {playlist_index}")
+            return False
+        
+        playlist = playlists[playlist_index]
+        songs = playlist.get('songs', [])
+        
+        # Find the song by position
+        for song in songs:
+            if song.get('position') == song_position:
+                if dry_run:
+                    print(f"DRY RUN: Would update playlist '{playlist['title']}' song {song_position}")
+                    print(f"  From: {song['artist']} - {song['title']}")
+                    print(f"  To:   {new_artist} - {new_title}")
+                else:
+                    song['artist'] = new_artist
+                    song['title'] = new_title
+                    
+                    # Save the updated playlists
+                    try:
+                        with open(playlists_path, 'w', encoding='utf-8') as f:
+                            json.dump(playlists, f, indent=2, ensure_ascii=False)
+                        print(f"Updated playlist '{playlist['title']}' song {song_position}")
+                        return True
+                    except Exception as e:
+                        print(f"Error saving playlists: {e}")
+                        return False
+                break
+        else:
+            print(f"Song with position {song_position} not found in playlist")
+            return False
+        
+        return True
+
+
+def main():
+    """Main function for CLI usage."""
+    import argparse
+    
+    parser = argparse.ArgumentParser(description='Validate playlists against song library')
+    parser.add_argument('--config', default='../config/config.json', help='Configuration file path')
+    parser.add_argument('--data-dir', default='../data', help='Data directory path')
+    parser.add_argument('--dry-run', action='store_true', default=True, help='Dry run mode (default)')
+    parser.add_argument('--apply', action='store_true', help='Apply changes (disable dry run)')
+    parser.add_argument('--playlist-index', type=int, help='Validate specific playlist by index')
+    parser.add_argument('--output', help='Output results to JSON file')
+    
+    args = parser.parse_args()
+    
+    # Load configuration
+    try:
+        with open(args.config, 'r') as f:
+            config = json.load(f)
+    except Exception as e:
+        print(f"Error loading config: {e}")
+        return
+    
+    # Create validator
+    validator = PlaylistValidator(config, args.data_dir)
+    
+    # Determine dry run mode
+    dry_run = not args.apply
+    
+    if args.playlist_index is not None:
+        # Validate specific playlist
+        playlists_path = os.path.join(args.data_dir, 'songList.json')
+        try:
+            with open(playlists_path, 'r', encoding='utf-8') as f:
+                playlists = json.load(f)
+        except Exception as e:
+            print(f"Error loading playlists: {e}")
+            return
+        
+        if args.playlist_index >= len(playlists):
+            print(f"Invalid playlist index: {args.playlist_index}")
+            return
+        
+        result = validator.validate_playlist(playlists[args.playlist_index], dry_run)
+        print(f"\nPlaylist: {result['playlist_title']}")
+        print(f"Total songs: {result['total_songs']}")
+        print(f"Exact matches: {result['summary']['exact_match_count']}")
+        print(f"Fuzzy matches: {result['summary']['fuzzy_match_count']}")
+        print(f"Missing: {result['summary']['missing_count']}")
+        print(f"Need manual review: {result['summary']['needs_manual_review']}")
+        
+    else:
+        # Validate all playlists
+        results = validator.validate_all_playlists(dry_run)
+        
+        print(f"\nPlaylist Validation Results:")
+        print(f"Total playlists: {results['total_playlists']}")
+        print(f"Total songs: {results['overall_summary']['total_songs']}")
+        print(f"Exact matches: {results['overall_summary']['exact_matches']}")
+        print(f"Fuzzy matches: {results['overall_summary']['fuzzy_matches']}")
+        print(f"Missing: {results['overall_summary']['missing_songs']}")
+        print(f"Need manual review: {results['overall_summary']['needs_manual_review']}")
+        
+        if args.output:
+            try:
+                with open(args.output, 'w', encoding='utf-8') as f:
+                    json.dump(results, f, indent=2, ensure_ascii=False)
+                print(f"\nResults saved to: {args.output}")
+            except Exception as e:
+                print(f"Error saving results: {e}")
+
+
+if __name__ == '__main__':
+    main() 

cli/report.py

@@ -510,7 +510,16 @@ class ReportGenerator:
     def save_report_to_file(self, report_content: str, file_path: str) -> None:
         """Save a report to a text file."""
         import os
-        os.makedirs(os.path.dirname(file_path), exist_ok=True)
+        
+        # Validate file_path
+        if not file_path or file_path is None:
+            print("Warning: Invalid file path provided, skipping report save")
+            return
+            
+        # Get directory and create it if needed
+        directory = os.path.dirname(file_path)
+        if directory:  # Only create directory if there is one
+            os.makedirs(directory, exist_ok=True)
         
         with open(file_path, 'w', encoding='utf-8') as f:
             f.write(report_content)

cli/utils.py

@@ -218,6 +218,50 @@ def extract_consolidated_channel_from_path(file_path: str, channel_priorities: L
     return None
 
 
+def clean_artist_name(artist_string: str) -> str:
+    """Clean artist name by removing features, collaborations, etc."""
+    if not artist_string:
+        return ""
+    
+    # Remove common feature/collaboration patterns (more precise)
+    patterns_to_remove = [
+        r'\s*feat\.?\s*.*$',      # feat. anything after
+        r'\s*ft\.?\s*.*$',        # ft. anything after
+        r'\s*featuring\s*.*$',    # featuring anything after
+        r'\s*with\s*.*$',         # with anything after
+        r'\s*presents\s*.*$',     # presents anything after
+        r'\s*featuring\s*.*$',    # featuring anything after
+        r'\s*feat\s*.*$',         # feat anything after
+        r'\s*ft\s*.*$',           # ft anything after
+    ]
+    
+    # Handle comma/semicolon/slash patterns more carefully
+    # Only remove if they're followed by feature words
+    separator_patterns = [
+        r'\s*,\s*(feat\.?|ft\.?|featuring|with|presents).*$',  # comma followed by feature words
+        r'\s*;\s*(feat\.?|ft\.?|featuring|with|presents).*$',  # semicolon followed by feature words
+        r'\s*/\s*(feat\.?|ft\.?|featuring|with|presents).*$',  # slash followed by feature words
+    ]
+    
+    cleaned_artist = artist_string
+    
+    # Apply feature removal patterns first
+    for pattern in patterns_to_remove:
+        cleaned_artist = re.sub(pattern, '', cleaned_artist, flags=re.IGNORECASE)
+    
+    # Apply separator patterns only if they're followed by feature words
+    for pattern in separator_patterns:
+        cleaned_artist = re.sub(pattern, '', cleaned_artist, flags=re.IGNORECASE)
+    
+    # Clean up any trailing separators that might be left
+    cleaned_artist = re.sub(r'\s*[,;/]\s*$', '', cleaned_artist)
+    
+    # Clean up extra whitespace
+    cleaned_artist = re.sub(r'\s+', ' ', cleaned_artist).strip()
+    
+    return cleaned_artist
+
+
 def parse_multi_artist(artist_string: str) -> List[str]:
     """Parse multi-artist strings with various delimiters."""
     if not artist_string:

config/config.json

@@ -1,11 +1,12 @@
 {
+  "data_directory": "data",
   "channel_priorities": [
     "Sing King Karaoke",
     "KaraFun Karaoke",
     "Stingray Karaoke"
   ],
   "matching": {
-    "fuzzy_matching": false,
+    "fuzzy_matching": true,
     "fuzzy_threshold": 0.85,
     "case_sensitive": false
   },

migrate_to_songs_json.py

@@ -0,0 +1,144 @@
+#!/usr/bin/env python3
+"""
+Migration script to help users move from allSongs.json to songs.json
+and update their configuration to use the new dynamic data directory.
+"""
+
+import os
+import json
+import shutil
+from pathlib import Path
+
+def load_json_file(file_path: str):
+    """Load JSON file safely."""
+    try:
+        with open(file_path, 'r', encoding='utf-8') as f:
+            return json.load(f)
+    except Exception as e:
+        print(f"Error loading {file_path}: {e}")
+        return None
+
+def save_json_file(file_path: str, data):
+    """Save JSON file safely."""
+    try:
+        with open(file_path, 'w', encoding='utf-8') as f:
+            json.dump(data, f, indent=2, ensure_ascii=False)
+        return True
+    except Exception as e:
+        print(f"Error saving {file_path}: {e}")
+        return False
+
+def migrate_songs_file():
+    """Migrate allSongs.json to songs.json if it exists."""
+    old_file = 'data/allSongs.json'
+    new_file = 'data/songs.json'
+    
+    if not os.path.exists(old_file):
+        print(f"⚠️  {old_file} not found - no migration needed")
+        return True
+    
+    if os.path.exists(new_file):
+        print(f"⚠️  {new_file} already exists - skipping migration")
+        return True
+    
+    print(f"🔄 Migrating {old_file} to {new_file}...")
+    
+    # Load the old file
+    songs_data = load_json_file(old_file)
+    if not songs_data:
+        print(f"❌ Failed to load {old_file}")
+        return False
+    
+    # Save to new file
+    if save_json_file(new_file, songs_data):
+        print(f"✅ Successfully migrated to {new_file}")
+        
+        # Create backup of old file
+        backup_file = 'data/allSongs.json.backup'
+        shutil.copy2(old_file, backup_file)
+        print(f"📦 Created backup at {backup_file}")
+        
+        return True
+    else:
+        print(f"❌ Failed to save {new_file}")
+        return False
+
+def update_config():
+    """Update config.json to include data_directory if not present."""
+    config_file = 'config/config.json'
+    
+    if not os.path.exists(config_file):
+        print(f"❌ {config_file} not found")
+        return False
+    
+    print(f"🔄 Updating {config_file}...")
+    
+    # Load current config
+    config = load_json_file(config_file)
+    if not config:
+        print(f"❌ Failed to load {config_file}")
+        return False
+    
+    # Check if data_directory already exists
+    if 'data_directory' in config:
+        print(f"✅ data_directory already configured: {config['data_directory']}")
+        return True
+    
+    # Add data_directory
+    config['data_directory'] = 'data'
+    
+    # Create backup
+    backup_file = 'config/config.json.backup'
+    shutil.copy2(config_file, backup_file)
+    print(f"📦 Created backup at {backup_file}")
+    
+    # Save updated config
+    if save_json_file(config_file, config):
+        print(f"✅ Successfully added data_directory to {config_file}")
+        return True
+    else:
+        print(f"❌ Failed to save {config_file}")
+        return False
+
+def main():
+    """Main migration function."""
+    print("🎤 KaraokeMerge Migration Script")
+    print("=" * 40)
+    print("This script will help you migrate to the new configuration:")
+    print("- Rename allSongs.json to songs.json")
+    print("- Add data_directory to config.json")
+    print()
+    
+    # Check if we're in the right directory
+    if not os.path.exists('config') or not os.path.exists('data'):
+        print("❌ Please run this script from the KaraokeMerge root directory")
+        return False
+    
+    success = True
+    
+    # Migrate songs file
+    if not migrate_songs_file():
+        success = False
+    
+    # Update config
+    if not update_config():
+        success = False
+    
+    print()
+    if success:
+        print("✅ Migration completed successfully!")
+        print()
+        print("Next steps:")
+        print("1. Test the CLI tool: python cli/main.py --show-config")
+        print("2. Test the web UI: python start_web_ui.py")
+        print("3. If everything works, you can delete the backup files")
+    else:
+        print("❌ Migration failed - please check the errors above")
+        return False
+    
+    return True
+
+if __name__ == "__main__":
+    success = main()
+    if not success:
+        exit(1)

requirements.txt

@@ -1,16 +1,12 @@
 # Python dependencies for KaraokeMerge CLI tool
 
-# Core dependencies (currently using only standard library)
-# No external dependencies required for basic functionality
+# Core dependencies
+flask>=2.0.0
 
-# Optional dependencies for enhanced features:
-# Uncomment the following lines if you want to enable fuzzy matching:
+# Fuzzy matching dependencies (required for playlist validation)
 fuzzywuzzy>=0.18.0
 python-Levenshtein>=0.21.0
 
 # For future enhancements:
 # pandas>=1.5.0  # For advanced data analysis
-# click>=8.0.0   # For enhanced CLI interface
-
-# Web UI dependencies
-flask>=2.0.0 
+# click>=8.0.0   # For enhanced CLI interface 

start_web_ui.py

@@ -10,21 +10,38 @@ import webbrowser
 from time import sleep
 
 def check_dependencies():
-    """Check if Flask is installed."""
+    """Check if required dependencies are installed."""
+    dependencies_ok = True
+    
+    # Check Flask
     try:
         import flask
         print("✅ Flask is installed")
-        return True
     except ImportError:
         print("❌ Flask is not installed")
         print("Installing Flask...")
         try:
             subprocess.check_call([sys.executable, "-m", "pip", "install", "flask>=2.0.0"])
             print("✅ Flask installed successfully")
-            return True
         except subprocess.CalledProcessError:
             print("❌ Failed to install Flask")
-            return False
+            dependencies_ok = False
+    
+    # Check fuzzywuzzy for playlist validation
+    try:
+        import fuzzywuzzy
+        print("✅ fuzzywuzzy is installed (for playlist validation)")
+    except ImportError:
+        print("❌ fuzzywuzzy is not installed")
+        print("Installing fuzzywuzzy and python-Levenshtein...")
+        try:
+            subprocess.check_call([sys.executable, "-m", "pip", "install", "fuzzywuzzy>=0.18.0", "python-Levenshtein>=0.21.0"])
+            print("✅ fuzzywuzzy installed successfully")
+        except subprocess.CalledProcessError:
+            print("❌ Failed to install fuzzywuzzy")
+            print("⚠️  Playlist validation will work without fuzzy matching")
+    
+    return dependencies_ok
 
 def check_data_files():
     """Check if required data files exist."""
@@ -71,7 +88,7 @@ def start_web_ui():
     
     # Start Flask app
     try:
-        print("🌐 Web UI will be available at: http://localhost:5000")
+        print("🌐 Web UI will be available at: http://localhost:5002")
         print("📱 You can open this URL in your web browser")
         print("\n⏳ Starting server... (Press Ctrl+C to stop)")
         print("-" * 60)
@@ -79,7 +96,7 @@ def start_web_ui():
         # Open browser after a short delay
         def open_browser():
             sleep(2)
-            webbrowser.open("http://localhost:5000")
+            webbrowser.open("http://localhost:5002")
         
         import threading
         browser_thread = threading.Thread(target=open_browser)

test_tool.py

@@ -24,7 +24,7 @@ def validate_data_files():
     
     # Check for required files
     required_files = [
-        'data/allSongs.json',
+        'data/songs.json',
         'config/config.json'
     ]
     
@@ -59,7 +59,7 @@ def analyze_song_data():
     """Analyze the song data structure and provide insights."""
     print("\n=== Song Data Analysis ===")
     
-    all_songs_path = 'data/allSongs.json'
+    all_songs_path = 'data/songs.json'
     if not os.path.exists(all_songs_path):
         print(f"❌ {all_songs_path} not found - cannot analyze song data")
         return

web/templates/index.html

@@ -245,9 +245,141 @@
             margin-top: 4px;
             word-break: break-all;
         }
+        
+        /* Navigation */
+        .nav-link {
+            color: #6c757d;
+        }
+        .nav-link.active {
+            color: #007bff;
+            font-weight: bold;
+        }
+        
+        /* Reset & Regenerate Button Styles */
+        #reset-regenerate-btn {
+            background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
+            border: none;
+            color: white;
+            font-weight: bold;
+            box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
+            transition: all 0.3s ease;
+        }
+        
+        #reset-regenerate-btn:hover {
+            background: linear-gradient(135deg, #ee5a24 0%, #ff6b6b 100%);
+            transform: translateY(-2px);
+            box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
+        }
+        
+        #reset-regenerate-btn:disabled {
+            background: #6c757d;
+            transform: none;
+            box-shadow: none;
+        }
+        
+        .action-buttons-section {
+            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
+            border-radius: 10px;
+            padding: 1rem;
+            border: 1px solid #dee2e6;
+        }
+
+        /* Progress Modal Styles */
+        .progress-container {
+            margin: 20px 0;
+        }
+
+        .progress-step {
+            font-size: 1.1rem;
+            font-weight: bold;
+            color: #007bff;
+            margin-bottom: 10px;
+        }
+
+        .progress-bar-container {
+            display: flex;
+            align-items: center;
+            gap: 10px;
+            margin-bottom: 15px;
+        }
+
+        .progress-bar {
+            flex: 1;
+            height: 20px;
+            background-color: #e9ecef;
+            border-radius: 10px;
+            overflow: hidden;
+        }
+
+        .progress-bar-fill {
+            height: 100%;
+            background: linear-gradient(90deg, #007bff, #0056b3);
+            transition: width 0.3s ease;
+        }
+
+        .progress-message {
+            color: #6c757d;
+            font-style: italic;
+        }
+
+        .cli-output-container {
+            margin-top: 20px;
+            border-top: 1px solid #dee2e6;
+            padding-top: 15px;
+        }
+
+        .cli-output {
+            background-color: #f8f9fa;
+            border: 1px solid #dee2e6;
+            border-radius: 5px;
+            padding: 10px;
+            max-height: 300px;
+            overflow-y: auto;
+            font-family: 'Courier New', monospace;
+            font-size: 0.9rem;
+            white-space: pre-wrap;
+        }
+
+        .modal-close {
+            color: #aaa;
+            float: right;
+            font-size: 28px;
+            font-weight: bold;
+            cursor: pointer;
+        }
+
+        .modal-close:hover {
+            color: #000;
+        }
     </style>
 </head>
 <body>
+    <!-- Navigation -->
+    <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+        <div class="container-fluid">
+            <a class="navbar-brand" href="/">
+                <i class="fas fa-music"></i> Karaoke Manager
+            </a>
+            <div class="navbar-nav">
+                <a class="nav-link active" href="/">
+                    <i class="fas fa-copy"></i> Duplicates
+                </a>
+                <a class="nav-link" href="/favorites">
+                    <i class="fas fa-heart"></i> Favorites
+                </a>
+                <a class="nav-link" href="/history">
+                    <i class="fas fa-history"></i> History
+                </a>
+                <a class="nav-link" href="/remaining-songs">
+                    <i class="fas fa-list"></i> Remaining Songs
+                </a>
+                <a class="nav-link" href="/playlist-validation">
+                    <i class="fas fa-list-check"></i> Playlist Validation
+                </a>
+            </div>
+        </div>
+    </nav>
+
     <div class="container-fluid">
         <!-- Header -->
         <div class="row bg-primary text-white p-3 mb-4">
@@ -310,6 +442,20 @@
             </div>
         </div>
 
+        <!-- Action Buttons -->
+        <div class="row mb-4">
+            <div class="col-12">
+                <div class="action-buttons-section">
+                    <div class="d-flex justify-content-end">
+                        <button id="reset-regenerate-btn" class="btn btn-lg" onclick="resetAndRegenerate()" 
+                                title="Delete all generated files and run the CLI tool again to regenerate everything">
+                            <i class="fas fa-sync-alt"></i> Reset & Regenerate
+                        </button>
+                    </div>
+                </div>
+            </div>
+        </div>
+
         <!-- File Type Breakdown -->
         <div class="row mb-4">
             <div class="col-md-4">
@@ -450,7 +596,7 @@
                                 <option value="">All Types</option>
                                 <option value="mp4">MP4</option>
                                 <option value="mp3">MP3</option>
-                                
+                                <option value="mp3-only">MP3 Only (No MP4 Alternative)</option>
                             </select>
                         </div>
                         <div class="col-md-2">
@@ -1316,6 +1462,124 @@
             }
         }
 
+        async function resetAndRegenerate() {
+            if (confirm('⚠️ WARNING: This will delete all generated files and run the CLI tool again.\n\nThis will:\n• Delete skipSongs.json\n• Delete all files in data/reports/\n• Delete all files in data/preferences/\n• Run the CLI tool to regenerate everything\n\nAre you sure you want to continue?')) {
+                try {
+                    // Show progress modal
+                    showProgressModal();
+                    
+                    // Disable the button
+                    const button = document.getElementById('reset-regenerate-btn');
+                    button.disabled = true;
+                    
+                    // Start the reset and regenerate process
+                    const response = await fetch('/api/reset-and-regenerate', {
+                        method: 'POST'
+                    });
+                    
+                    const result = await response.json();
+                    
+                    if (result.success) {
+                        // Start monitoring progress
+                        startProgressMonitoring();
+                    } else {
+                        hideProgressModal();
+                        alert('❌ Error: ' + result.error);
+                        button.disabled = false;
+                    }
+                    
+                } catch (error) {
+                    console.error('Error during reset and regenerate:', error);
+                    hideProgressModal();
+                    alert('❌ Error during reset and regenerate: ' + error.message);
+                    const button = document.getElementById('reset-regenerate-btn');
+                    button.disabled = false;
+                }
+            }
+        }
+
+        function showProgressModal() {
+            const modal = document.getElementById('progressModal');
+            modal.style.display = 'block';
+            
+            // Reset progress
+            document.getElementById('currentStep').textContent = 'Initializing...';
+            document.getElementById('progressBarFill').style.width = '0%';
+            document.getElementById('progressText').textContent = '0%';
+            document.getElementById('progressMessage').textContent = 'Starting process...';
+            document.getElementById('cliOutput').textContent = '';
+        }
+
+        function hideProgressModal() {
+            const modal = document.getElementById('progressModal');
+            modal.style.display = 'none';
+        }
+
+        function closeProgressModal() {
+            hideProgressModal();
+            // Re-enable the button
+            const button = document.getElementById('reset-regenerate-btn');
+            button.disabled = false;
+        }
+
+        function startProgressMonitoring() {
+            // Use polling for progress updates (more reliable than SSE)
+            const pollInterval = setInterval(async function() {
+                try {
+                    const response = await fetch('/api/progress');
+                    const data = await response.json();
+                    
+                    updateProgress(data);
+                    
+                    // If process is complete or error, stop polling
+                    if (data.status === 'completed' || data.status === 'error') {
+                        clearInterval(pollInterval);
+                        
+                        if (data.status === 'completed') {
+                            setTimeout(() => {
+                                hideProgressModal();
+                                alert('✅ Reset and regeneration completed successfully!\n\n' + data.message);
+                                window.location.reload();
+                            }, 2000);
+                        } else {
+                            setTimeout(() => {
+                                hideProgressModal();
+                                alert('❌ Error: ' + data.message);
+                                const button = document.getElementById('reset-regenerate-btn');
+                                button.disabled = false;
+                            }, 2000);
+                        }
+                    }
+                } catch (error) {
+                    console.error('Error polling progress:', error);
+                    clearInterval(pollInterval);
+                    hideProgressModal();
+                    alert('❌ Error: Lost connection to progress updates');
+                    const button = document.getElementById('reset-regenerate-btn');
+                    button.disabled = false;
+                }
+            }, 1000); // Poll every second
+        }
+
+        function updateProgress(data) {
+            // Update progress bar
+            const progressBar = document.getElementById('progressBarFill');
+            const progressText = document.getElementById('progressText');
+            progressBar.style.width = data.progress + '%';
+            progressText.textContent = data.progress + '%';
+            
+            // Update current step
+            document.getElementById('currentStep').textContent = data.current_step;
+            
+            // Update message
+            document.getElementById('progressMessage').textContent = data.message;
+            
+            // Update CLI output
+            const cliOutput = document.getElementById('cliOutput');
+            cliOutput.textContent = data.cli_output.join('\n');
+            cliOutput.scrollTop = cliOutput.scrollHeight; // Auto-scroll to bottom
+        }
+
         // Video Player Functions
         function normalizePath(filePath) {
             // Debug logging to track path transformation - show original path first
@@ -1552,5 +1816,35 @@
             </div>
         </div>
     </div>
+
+    <!-- Progress Modal -->
+    <div id="progressModal" class="modal">
+        <div class="modal-content" style="max-width: 800px;">
+            <span class="modal-close" onclick="closeProgressModal()">&times;</span>
+            <h3><i class="fas fa-cog fa-spin"></i> Processing...</h3>
+            
+            <div class="progress-container">
+                <div class="progress-step">
+                    <span id="currentStep">Initializing...</span>
+                </div>
+                
+                <div class="progress-bar-container">
+                    <div class="progress-bar">
+                        <div id="progressBarFill" class="progress-bar-fill" style="width: 0%"></div>
+                    </div>
+                    <span id="progressText">0%</span>
+                </div>
+                
+                <div class="progress-message">
+                    <span id="progressMessage">Starting process...</span>
+                </div>
+            </div>
+            
+            <div class="cli-output-container">
+                <h4>CLI Output:</h4>
+                <div id="cliOutput" class="cli-output"></div>
+            </div>
+        </div>
+    </div>
 </body>
 </html> 

web/templates/remaining_songs.html

@@ -48,9 +48,41 @@
         .back-button {
             margin-bottom: 1rem;
         }
+        
+        /* Navigation */
+        .nav-link {
+            color: #6c757d;
+        }
+        .nav-link.active {
+            color: #28a745;
+            font-weight: bold;
+        }
     </style>
 </head>
 <body>
+    <!-- Navigation -->
+    <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+        <div class="container-fluid">
+            <a class="navbar-brand" href="/">
+                <i class="fas fa-music"></i> Karaoke Manager
+            </a>
+            <div class="navbar-nav">
+                <a class="nav-link" href="/">
+                    <i class="fas fa-copy"></i> Duplicates
+                </a>
+                <a class="nav-link" href="/favorites">
+                    <i class="fas fa-heart"></i> Favorites
+                </a>
+                <a class="nav-link" href="/history">
+                    <i class="fas fa-history"></i> History
+                </a>
+                <a class="nav-link active" href="/remaining-songs">
+                    <i class="fas fa-list"></i> Remaining Songs
+                </a>
+            </div>
+        </div>
+    </nav>
+
     <div class="container-fluid">
         <!-- Header -->
         <div class="row mt-3">