Bleh, seems my old password won't work but the ID still exists. And I must've used a fake e-mail. Ah well.
Yes, Richard mentioned this to me a while back, we confirmed it with the SNES test. Slight porting issue. The new release he's working on should fix it
Also, be sure to check out the brand new Snes9X v1.52. An OS X DMG can be downloaded here:
Has a new sound core that's very close to bsnes.