I am getting really frusterated with my sound situation. Right now, I have a 500watt sound system hooked up to a cdplayer, tv, vcr, and my computer. However, it is hooked up to the "Line out" section of the sound card. I have been researching some, trying to see if I can use the digital output and hook it up to my reciever. I am stumped. The cables I am using are RCA cables converter thing (red & white RCA ==> computer jack thing). My reciever has coaxial and optical digital inputs. I dont know what I need to get to have it so that my soundcard can give full 5.1 sound from my computer. Also, as it is right now, i hear buzzing sound from my sound system when I have it selected to the computer. I hear no buzzing sound when I have it selected to my cd player, and sound only comes out of the right front speaker when in TV mode. Any help would be greatly appretiated.