i'm surprised no one is using the most simplest wireless setup i could have imagined... lol
1. Ipod
2. Itrip (wireless transmitter to FM radio station)
3. Sunglasses with built-in FM radio
Set your Itrip to a designated FM Channel
Scan your sunglasses radio to that channel
Setup desired volume (built in)
Enjoy the ride, no wires, no headaches