Charles - finally got mine to work after playing around for a while. Most of the problem was in the mixer settings. Follow the instructions on this page
http://www.alsa-project.org/alsa-doc...module=emu10k1
to upgrade your ALSA install from the FC2 default. After you do that, go to your mixer and check the box for advanced options. You should see a box for digital out (or something like that) - make sure it's enabled. Adjust all your volume levels to ~50 - 75% and make sure that the slider called AC97 (or some variation of that - sorry, I'm not at my machine) is muted. I did this and haven't had any problems since!