i got everything working, music seems a little quiet, but turn it up and it's there.
used Null2's Audio 1.3, and ePSXe CDR ASPI core 1.0.1.
h/w spec is in my profile.
btw, this game seems to work with everything, VGS, bleem!, even AdriPSX.
in case you want to play the older one, X-men VS Street Fighter, get one of those CPS2 emulators, they run perfectly! I play with that more than MSHvSF on PSX emus, which has no character switching, damn PSX memory limitation, not Capcom's fault...