BeardLib music mod (unpack to assets/mod_overrides). All pieces are extracted from gamefiles (not gamerip) for maximum quality and nice loops.

Themes included:
Militech (the one that plays during the convoy ambush with Panam)
To Hell and Back (with a stealth theme probably taken from Badlanders)
Main Menu (Character Creation Screen) (obviously a menu track)

If it's too loud/quiet, please change the volume in main.xml.