R. Belmont: I haven't done anything with the AICA since my last patch, so feel free to work on it.
I do have a (preliminary) Gunbird 2 rip, though, in case anyone is interested. I'm not sure if the rip is correct, however, since IMXL/ISEL/DISDL/DIPAN are constant (0/0/F/0) for all key-ons which would indicate the game's music is mono (can this actually be the case?). I went ahead and ripped all sequences (MSB) and one-shot banks (OSB). Interestingly, Highly Theoretical fails to play any of the OSB tracks, but AOSDK handles them just fine.