I use C-Media USB Headphone Set for my Sennheiser headphones, it's not working in Linux (Ubuntu 9.04, Suse 11.1, Fedora 10, Kubuntu9.04), I use it because I can plug it into a USB port at the back of my case, otherwise it's an eyesore! Like I said I can't get it to work so I unplug the speakers jack and replace it with the headphone jack at the back of the MB. I don't have the front audio jack plugged in to the MB because there's to much crap to get around (heatsinks, video card, RAM fans), anyone know how to fix this, in Kmix it has a channel for headphones but there's no volume control 