Look, Ma. No wires.
TuneStik transmits iPod tunes to any radio via remote control.
Whilestreams Real Audio Internet radio via Ethernet or Wi-Fi and can even stream songs from a PC network, that doesn't help when it comes to your iPod.
The TuneStik for $60 from Digital Lifestyle Outfitters combines an FM transmitter and radio frequency remote control. It lets you wirelessly play and control your iPod through any radio within 40 feet.
For when you are not by your Tivoli and need to use the car, the TuneStik has a clip-on cradle to hold the remote to your steering wheel.