Hi, I'm goin to be building my dad a HTPC soon and i was wondering which sound cards are good for the HTPC. I was looking at the M-Audio line of sounds card which seem to be quite interesting. The main thing that i'm really looking for besides quality and such is optical or coaxial out as i was to connect it to the reciever. Also, I was looking at the Emu line of sound cards but are too expensive.