Hex locations for CD audio?

[BaronXVI]

Hi there;
I'm wondering if there's a way to find any hex locations for CD audio in Saturn games so I can edit them. I'm currently wanting to change some of the music in Time Warner Interactive's VR Virtua Racing in order for something other than the Bay Bridge theme to play in every menu. I've tried looking at debugging in Yabasanshiro and Ymir but I'm coming up blank, I think I'm in over my head.

If any of you are able to help out, please let me know.