How do I listen to music on computer thru receiver

I am looking to pruchase a new SR receiver. I want to use it 50% HD and 50% my music library. I have copied my music to my desk top computer and would like to play from computer thru the new SR receiver. What make and model is recomended. $500 is budget. I just got into this audio stuff and I'm starting to enjoy music again. I have ERA D14's and PSB 25"s. I also have a Dynaudio c120. All sound fine with old receiver.

Thanks in adavance.