Relinking CD Audio in Dreamcast Games?

[Velocity 7]

Does anyone know how to do this? I'd like to somehow hack the IP.BIN file, view all of its LBA references, then modify the references so that a certain audio track will play another instead. For example, if the game asks to play track 4, it will play track 1 instead.

FYI, I'm trying to get this done in the game, Virtual-ON - Oratorio Tangram. I have a dumped list of the original GD tracks attached...if anyone can help me (especially Megalexxx), please post.