Before I start, I'd just like to point out that I'm not an expert in these matters, but I've more or less reached the end of my tether trying to work this out. I've got an Asus P4P800 motherboard with integrated SoundMax controller (can't remember which one off the top of my head - maybe AD1980?) I also have a receiver - a Sony STR-DE585, which works great. I've also got a coax S/PDIF output on the back of the motherboard, so I thought "what the hey, let's get some digital output going". I get 5.1 Digital when playing dvd's and have got normal audio going through it as well. I have to say, everything works great, apart from one really, really annoying thing. Whether this is normal or not, I don't know, but instead of there being a constant audio output from the sound card (even when I'm not playing mp3s or whatever) the S/PDIF signal cuts out, and it takes about a second for the audio to kick back in again when I do start playing an mp3. It's particularly annoying because it means I can't hear any alert sounds - by the time they've played, the receiver only just notices there's a signal there and I don't hear anything. If anyone could help me out with this, it'd be much appreciated. Cheers.