Logitech's Wireless Music System for iPod is a surprisingly good product. There are two pieces: A receiver plugs into the stereo jacks of your audio system and the transmitter which plugs into the headphone jack of your iPod. The iPod, in effect, becomes it's own remote control. Pushing a small button on the transmitter causes it to pair with the receiver, and in a few seconds music is flowing to your audio system. Because it is RF-based, you don't have to worry about line-of-sight communications. The transmitter uses a rechargeable battery. Interestingly, a single transmitter can pair up with multiple receivers and can stream music to up to 10 rooms. I've never tried this because I only have a single system, but may purchase a second receiver for my workout room. The sound quality is excellent. As far as I can tell, there is no degradation from listening to music on the iPod itself.