Hi all, I want to connect my audigy sound card to my av receiver. However i'm a little confused The manual states using a mono 3.5mm to RCA plugged into the cards digital out this then plugs into the digital input on the receiver. My receiver has a coaxial and optical input, would such a lead plug straight into the coaxial or do I need an adapter? I cant seem to find a mono lead anywhere only stereo dual RCA ones. Can anyone tell me where they got theirs? Thanks in advance..