First things first, back up your BGM folder located in /data/sound/BGM.
This replaces the battle BGM (not all, but most) and the Main Menu/Character Select BGM with a few of my personal favorite tracks from the Budokai series. I've been asking for this for a while and just got bored and decided to learn how to do it myself (actually not hard at all.)
Extract and drag and drop into the root of Xenoverse 2 folder.
1.1 Fixed a bug where Battle BGM 1 keeps playing after the fight.
LINK: Moved it to mediafire since dropbox took.
1.2 Added songs from DBZ Burst Limit and removed "Babidi Casts a Spell" which was added by accident.