First, you will need an iTrip FM Transmitter. The transmitter is what allows you to broadcast your songs/music to an available radio. If you do not yet have an iTrip FM Transmitter, you can easily purchase one online at numerous locations. Just use your favorite search engine to find a site that sells them. You cannot do this without one.
Begin by exposing the antenna on your iTrip FM Transmitter.
Open your IPod music library and broadcast your Ipod music to any radio that you are a short distance from, even if it is not your radio. It is just that easy.