Listening to 88.1 this morning. "Power 88" is what I call it.
My little MPX96 transmitter pumping out music from the computer in the radio room.
You can buy the kit at http://www.northcountryradio.com/
But you'll have to build it! And it's not for first-time builders.
There are some mods for it out on the 'net to make it sound better, but I think it sounds great as it is if you feed it with good audio of the right impedance and level.
Only wish I had an audio processor to put in front of it. Like an Optimod! I think I'd have to modify the MPX96 to take in baseband audio/stereo mix to use an Optimod though.
I had a blast building the MPX96 a few years back.