I don't have it yet, but I just ordered a Motorola Motorokr T505 bluetooth speakerphone that also has an FM transmitter built in so you can play audio to your car's stereo system. Not sure if that might be what you're looking for. Can't recommend it one way or the other since I don't have it yet. I was just looking at the Sirius XM App on the market and from the description, it sounds like it's only a free app if you're already an XM subscriber though, otherwise the description says something about a "free trial".