Long time ago i saw on Youtube this sound. You could use any online "youtube to mp3" converter and download it.
All i found for now is this
but there's also play music of map zone.If You're desperate, You could turn off music in DBO, turn ON only effects, dragon ball drop, wait for event and record Your gameplay until You drop db.
Fun fact: I made that video hahaha xD I think I'll have to do that. Record it again.