I like that they pulled a lot of the sound effects from the anime. Only playing with JP voices, so they're all there - the original VAs. That's all cool. It's the Dragon Ball sound we know and love.

I'm also o-kay with majority of the soundtracks, the only minor quip is that they do not have an infinite loop so after each track is done it just start from the beginning again. Only a minor hindrance during training mode and not anywhere else though.

Unfortunately the audio files are not of the highest quality sampling rate, I can definitely hear clipping if I push the volume too high. Also, do not go above 85 in the game's volume settings as well - that will cause distortion.
Another annoying thing is that voices/sound effects can also clip if you reset the screen position in training mode - like in the midst of an attack.

Otherwise really not much else to say about the game's audio. It's about as decent as any anime fighters I think.