http://bugs.winehq.org/show_bug.cgi?id=11764
--- Comment #51 from Forest winehq@tibit.com 2012-09-11 12:35:49 CDT --- Let me know if you want someone to help with testing. I have a surround51 device working in linux applications on an ALSA-only system. (After screwing things up so many times, Pulse is no longer welcome on my computer.) The card is an Audigy2 so I have hardware mixing, which I'm told is unusual for sound cards these days. I also happen to have a wine build environment with a recent git checkout.
FYI, I haven't witnessed working surround sound from wine yet, but then again I've only tried one game. I'm not sure what Windows applications would be likely to work.