It's a bit hard wading through the many variations of Street Fighter II's music, so I'm specifically asking for whichever OST has the arranged music from the Anniversary edition (which is listed in the options as CPIII). Anyone have this?

Unless you rip it, the soundtrack to anniversary edition is VERY RARE! Anyway I would like to give you something.

This is the closest you will get to finding the soundtrack for now.

http://gh.ffshrine.org/soundtracks/6149

Enjoy!