Great tip from CNet to get the best signal on your satellite radio receiver or MP3 player: "If you don’t have a cassette deck in your vehicle, one of the simplest ways to connect an MP3 player or satellite radio receiver is via FM transmission... Luckily, there’s an easy way to find vacant FM frequencies ... Simply visit Radio-Locator.com, enter the city or ZIP code into the search box, and click Go. You’ll be taken to a page which offers a frequency strength graph and three sets of recommended channels: vacant, next best, and third best. Obviously, a vacant channel is best."