Persona 4 Golden/Sound

 is an archive in Persona 4 Golden It contains a file called adx2 where inside it contains all the BGM of the game.

Files

 * adx2
 * bgm
 * commse
 * assorted awb archives

Modding
https://www.tapatalk.com/groups/amicitia/acb-unpacker-repacker-for-bgm-t1121.html
 * Acb Editor allows one to pack and unpack acb files

https://shrinefox.com/forum/viewtopic.php?f=7&t=184
 * AutoAT9Tools automatically converts a folder with at9 files to .wav (converting back to at9 must be done manually)