I'm a newbie to audio on Linux. So far things are working OK, but I can't figure out for the life of me how to disable audio playthrough. I'm running SUSE 9.2 w/KDE on a Dell Inspiron 600m. No applications are running, but somebody is echoing line in to line out. I've looked through KDE, YaST, and ALSA controls for audio but I can't find a setting for playthrough. Google searches have failed me... any advice appreciated. thanks, darren