It turned out the problem I was having was that pulseaudio 0.9.11 (even with the three patches posted recently to alsa-devel) still has issues under Fedora 9. When I regressed back to pulseaudio 0.9.10 and used the latest 2.6.26-git6 kernel which has the alsa 1.0.17 drivers, audio works fine now. Jack ps What I get under pulseaudio 0.9.11 is distortion and static in the audio playback.