http://bugs.winehq.org/show_bug.cgi?id=11764
--- Comment #15 from Adam Bolte boltronics@gmail.com 2011-01-03 06:49:01 CST --- I don't think I've ever used a sound card that required retasking the input jacks as outputs for additional channel outputs, but would assume it would entirely be taken care of in ALSA.
I suspect (as far as Windows software goes) only driver utility software would need this functionality, and WINE in general doesn't deal with drivers. Thus, I figure we only need to work with whatever is already configured in ALSA/Sound Preferences and keep things simple? Hope I understood you correctly.