Hey guys, I have a question about the CLD-925 and though I'd stick it here. I got a 925 a few months ago and am very happy with it - it's a fantastic player! Annoyingly though the seller said he would send a manual and didn't and I'm still chasing him up about this, and I'm a bit confused about the optical out on the player. Does anyone know what this is used for? I assumed digital stereo tracks could come out of it, but when I have tried I get nothing - seems they can only come out via the RCA stereo outs. What is the opitical out used for? I'm hoping mine isn't broken...

Thanks in advance!