Extracting Audio from Phantom Breaker Omnia?

[Shamasaurus]

I've tried looking into how to break into the .BIN files for the game, but I have no idea what I'm doing. Something about making your own BMS script if that's what's even needed, but I don't even know how. I've seen various strands of letters that keep reappearing through the BIN files in Hex Editor... like CIOU, CBMS, etc. but no idea what to even do. 

Sample:
https://mega.nz/file/F00VkSbJ

Key: 6tY6ds6Fcw9tcONHbEEA3hb471BgTFYSxyxxCkfdsxI