I rly like the music collection that's in this game. You can access it in the options/extras menu. Some of the music used is taken directly from the series one example being one ripped piece that I'd like the most, which is the instrumental music used during a next episode preview of yu yu hakusho.

Anyway if for some reason you're not able to rip this music but you know where I could find it, if you could tell me where I could, that would be just as helpful! Thank you very much in advance.

Have you still not found it? I once Ripped this OST along with the "Battle of 120%". If you have the ISO, it'll be easy to for you to rip if you can download DKZ studio--only because the format of the songs are .ADX, so converting to .wav isn't very hard. However, if you're feeling lazy and just want a lower quality version of the audio, then surf this YT channel: rendven - YouTube (http://www.youtube.com/user/rendven?feature=watch)

Thank you very much! Excellent YT channel & so far the channel has some of what I've been looking for. Thank you very much.