Take a look at the list of Audioengine wireless products. I use the A1 (soon to be discontinued in favor of the improved A3), to stream Internet audio, like Pandora, and my iTunes library residing on the laptop ... very convenient. Have one set-up streaming to main rig and another to upstairs system, with no degradation in sound. Only real downside with the A1 is that you is that you can only play one device at a time. That is being addressed with the A3. I'll probably have to pick one up.
