Surface Pro for Audio control?

I've got a Surface Pro and a desktop computer running Windows 8 Pro, and I'm looking for a way to control the music that's played on the computer's speakers from the Surface.

I'm thinking either some type of remote on the Surface to control XBox music on the computer, and something like SmartGlass doesn't look like it's what I'm looking for.

Otherwise, maybe a way to stream audio from the Surface to the computer easily, à la Apple Airplay (I used to stream from my iPhone to my computer using ShairPort4w to turn the PC into an Airplay receiver.)

Any ideas?