It's very common
1. Go to: \Mech Armada\Test001\Content\FMOD\Desktop
2. Replace Music.bank
3. ???
4. Profit

Or maybe you wanna have backup, so, just rename Music.bank to MusicOrig.bank in game folder

Not all music have great loop point, so you pretty much gonna hear it
It's because i can't change length of music, but do not fear, it's not so bad

There are 7 audio files that unused, but i change them anyway, but i don't know where they are play, so, there are just music.

It's straight up from Front Mission series, except two audio files
Main Menu from Ace Combat 5 - Hangar 1
And other audio that i think is unused

Google drive[drive.google.com]
Or
goo. su/NRR6 - Just take away the space