Broadcasting FM with Macbook airport...or another mac app???

hey don't know if this goes here.
i wanted to know if i can do this, or if there's an app that'll let me do this. i just want to broadcast music from my computer to my radio in another part of the house. if anyone has some advice i'd be greatly appreciated. thanks

Airport is wireless LAN stuff, not FM.

You could buy one of those lil FM transmitters designed for Ipods, but im my opinion they're awful...

You could buy something more powerful, but that would be illegal, and you'd practically be running a pirate radio station.
XD