I think I was inquiring into this before at one point long ago, but I can't find much that's helpful I've got a red hat 9 box, latest planetccrma kernel and packages - using the cmedia sound card that's built in to the soyo dragon mobo trying to get spdif IN working, especially in Ardour - but no luck SPDIF Out works, but not spdif in i've been in alsamixer (and sometimes gamix) to penis around with the various settings (enabling ie6blahblah 5v and "in select" and "in phase reverse" and such and no combo has worked so far. i have been able to get input from the lamo "line in" but not from spdif in - haven't tried the optical in (or out) yet...hmmm... anybody got ideas?