I got dmix working in KDE for my intel 8x0 card. Wonderful, everything is playing at the same time and I'd be happy completely, except.
I have no sounds in KDE, as in no start up sound, no end sound no sounds for windows going up and down. In "Configure Desktop", in sound system I have selected ALSA - no go, i've also tried Threaded OSS, still no good. Funnily enough, I can play Test sound properly. But no other sounds come out of KDE. Even when I try to set notify's, pressing preview sound does nothing. No sound whatsoever.
It's possible that I screwed something up and it works for somebody else. I'd like to know why it doesn't work for me.
If somebody needs help with dmix and alsa, I can help :)