diff --git a/PRD.md b/PRD.md
index 42c1ca7..64ae5cc 100644
--- a/PRD.md
+++ b/PRD.md
@@ -159,7 +159,6 @@ KaroakeVideoDownloader/
 │   ├── songlist_tracking.json
 │   ├── channel_cache.json
 │   ├── channels.json          # Channel configuration with parsing rules
-│   ├── channels.txt           # Legacy channel list (backward compatibility)
 │   ├── manual_videos.json     # Manual video collection
 │   └── songList.json
 ├── utilities/                # Utility scripts and tools
diff --git a/README.md b/README.md
index 5568d47..0df0e58 100644
--- a/README.md
+++ b/README.md
@@ -416,7 +416,7 @@ KaroakeVideoDownloader/
 │   ├── karaoke_tracking.json
 │   ├── songlist_tracking.json
 │   ├── channel_cache.json
-│   ├── channels.txt
+│   ├── channels.json          # Channel configuration with parsing rules
 │   └── songList.json
 ├── utilities/                # Utility scripts and tools
 │   ├── add_manual_video.py  # Manual video management
diff --git a/commands.txt b/commands.txt
index c543bca..bd23d7c 100644
--- a/commands.txt
+++ b/commands.txt
@@ -8,7 +8,7 @@
 python download_karaoke.py https://www.youtube.com/@SingKingKaraoke/videos
 
 # Download from a file containing multiple channel URLs
-python download_karaoke.py --file data/channels.txt
+python download_karaoke.py --file data/channels.json
 
 # Download with custom resolution (480p, 720p, 1080p, 1440p, 2160p)
 python download_karaoke.py --resolution 1080p https://www.youtube.com/@SingKingKaraoke/videos
@@ -81,7 +81,7 @@ python download_karaoke.py --generate-songlist /path/to/dir1 /path/to/dir2 --no-
 
 ## 🎵 SONGLIST OPERATIONS
 
-# Download only songs from your songlist (uses data/channels.txt by default)
+# Download only songs from your songlist (uses data/channels.json by default)
 python download_karaoke.py --songlist-only
 
 # Download only songlist songs with limit
@@ -195,7 +195,7 @@ python download_karaoke.py --parallel --workers 3 --latest-per-channel --limit 5
 python download_karaoke.py --parallel --workers 3 --latest-per-channel --limit 5 --fuzzy-match --fuzzy-threshold 85
 
 # Download latest videos from specific channels file
-python download_karaoke.py --latest-per-channel --limit 5 --file data/channels.txt
+python download_karaoke.py --latest-per-channel --limit 5 --file data/channels.json
 
 ## 🔄 CACHE & TRACKING MANAGEMENT
 
@@ -254,7 +254,7 @@ python download_karaoke.py --version
 python download_karaoke.py --songlist-only --limit 20 --fuzzy-match --fuzzy-threshold 85 --resolution 1080p
 
 # Latest videos per channel with fuzzy matching
-python download_karaoke.py --latest-per-channel --limit 3 --fuzzy-match --fuzzy-threshold 90 --file data/channels.txt
+python download_karaoke.py --latest-per-channel --limit 3 --fuzzy-match --fuzzy-threshold 90 --file data/channels.json
 
 # Force refresh everything and download songlist
 python download_karaoke.py --songlist-only --force-download-plan --refresh --limit 10
@@ -347,7 +347,7 @@ python download_karaoke.py --clear-server-duplicates
 
 # Default files used:
 # - data/channels.json (channel configuration with parsing rules, preferred)
-# - data/channels.txt (legacy channel list, backward compatibility)
+# - data/channels.json (channel configuration with parsing rules)
 # - data/manual_videos.json (manual video collection)
 # - data/songList.json (your prioritized song list)
 # - data/config.json (download settings)
@@ -357,7 +357,7 @@ python download_karaoke.py --clear-server-duplicates
 # Fuzzy threshold: 0-100 (higher = more strict matching, default 90)
 
 # The system automatically:
-# - Uses data/channels.json if available, falls back to data/channels.txt if no --file specified in songlist modes
+# - Uses data/channels.json for channel configuration and parsing rules
 # - Caches channel data for 24 hours (configurable)
 # - Tracks all downloads in JSON files
 # - Avoids re-downloading existing files