Remove audio files and update .gitignore to prevent media files

- Removed 111 audio files from aider-genius/aider/website/assets/audio/
- Added .gitignore rules for audio file extensions (mp3, wav, ogg, flac, aac, m4a)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: udithishanka

.gitignore

@@ -26,4 +26,12 @@ build/
 *.gif
 *.faiss
 *.pkl
-faiss_index/
+faiss_index/
+
+# Audio files
+*.mp3
+*.wav
+*.ogg
+*.flac
+*.aac
+*.m4a