Can airtunes be used in reverse? I would like to pipe our radio stations back from my radio to my new imac and then to different sattelite wireless radios placed around my home. How would it be possible to hijack a transmitting tower with a beefed up itrip? We have rigged a metal overhead exit sign on a highway to basically become an antenna amplifier to broadcast a preset radio channel when cars go underneath it. If they are on the right frequency their station would intermitantly be interupted for a second with what we want them to hear? Now, how can I simultaneously broadcast 100 channels at the same time through this amplifier so that any car tuned to any preset channel can hear it... no, i don't want to buy 100 itrips. I have 418 bucks and a dn 50 dollar certificate to radio shack, and three weeks to accomplish this.