Okay, My motherboard has onboard sound. At home, I used to like to hook my receiver up to my pc through the optical out of the motherboard. When I was at school without the receiver (using headphones), I was having a bit of trouble with the onboard sound. I was getting some feedback from closing and opening windows and even mouse movement. It was starting to bother me. So I got a creative audigy zs 2 card and some logitech speakers. Now everything works well at school. My question is, what's the best way to attach my pc to my receiver at home? I can still go through optical but I have to swith the pcs sound output back to the onboard which is a bit of a pain. In terms of sound quality what's my best option? If I want to use the soundcard, what's the best way to attach it to the receiver? My receiver is a yamaha RX-V730 (http://www.yamaha.ca/av/Receivers/RXV730.jsp). It only has one digital coax input which is not being used because I use mostly optical. The card seems to have a digital output but it's a headphone style jack. Oh and I am going for 5.1 surround sound. Thank you for your help!