My mixers are ok I think. I can hear sound in Flash and Audacious as long as they're not both running. If Flash is running and I try to play in Audacious I get a "can't access sound card" error. Oddly Xine and Flash don't fight though, so maybe this is just an Audacious bug. I wish Xine was a bit easier to use...
In case anyone cares, XMMS works too. I can't tell Audacious and XMMS apart, so I'm pretty happy to switch.
-sam