Hi Bob, I go wireless to listen to audio from my pc to my receiver. I use the
RCA Lyra RD900W which I think would work great for you. Basically, you hook up the transmitter to your USB port on your PC, then the receiver with RCA cables to your stereo receiver. Voila! No wireless network needed either.
Anyway, it comes with MusicMatch software which you DO not need to use although the remote only will work with MM. All you need to do is just go to your pc's control panel and change your audio device to use the Lyra and basically it replaces your pc speakers. So anything you listen to will go through to your stereo receiver instead of to your pc's speakers. I use mine all the time to listen to music on my bedroom system.
The product is sort of old and outdated because of the Sqeezebox and Roku (with nice LED screens), but it can still be found at fairly cheap prices on some internet stores. Here's some
reviews at Amazon just to give you more of an idea of what is does.