I've sent you a Discord DM explaining all the tools that got me kind of somewhere in detail, cause I can't explain it in short for the life of me, and I'm kind of new to the site!
I don't know if this is any help to you, since I don't really know about audio codecs or headers, or hex, or anything about that but...I've kinda managed to get what I think was a clean extraction of Kane & Lynch 2 Dog Days, maybe the info on how I did it could be helpful to you to kinda reverse engineer what the tools did or something?