Ipod touch radio hacker?

[PlasmaShock]

My friend brought this adapter to school before but lost it. You plug it in the ipod's connector and select a radio channel. If there is a radio in the area that just so happens to be on the same channel, your ipod will take over it and you can play songs from your ipod so other people can hear them. I think this is very cool because our shops teacher turns on the radio during class and we're tired of hearing the usual crap that comes out of it.

Where can I buy one of these things and what are they called?

[AndyT4097]

A FM adapter?

[PlasmaShock]

A FM adapter?

Yeah but one that you can control other radios with. The ones I see on the internet only recieve signals so that you can listen to the radio.

[ReyZero]

The ones you are looking up are FM recievers which take FM signals so you can listen to them on your iPod.
You want an FM transmitter, like those used in car docks, allowing you to send your music over FM