http://bugs.winehq.org/show_bug.cgi?id=10495
--- Comment #298 from Rafał Mużyło galtgendo@o2.pl 2011-01-08 20:28:26 CST --- If you're talking about midi generation, then perhaps it's true, timidity playback works just fine though.
Frankly, I'm getting a feeling that some of the devs think, that wine is only run on pro-audio setups (all that stuff about jack and latency). IIRC average setups can't really deal with that anyway. They simply live with a bit of latency, though usually it's not that much to be really noticeable.
And just what should "PA cannot redirect all sound to the default sink" ? Last time I checked, by a simple alsa.conf pulse can be made default alsa device.