Hello! 

If you want to add your own music, then follow these instructions.

1. Go to the folder BBModsW212.zip\art\sound\music\your_songs
2. Drag and drop the music file into this folder
3. Name your file "your song 1.mp3"
4. You can only add 5 songs in total: 
your song 1.mp3, your song 2.mp3, your song 3.mp3, your song 4.mp3, your song 5.mp3

Enjoy!
Best regards,
BBMods Team