If you really want to get lazy, turn on the portable XM in the car, park it near enough to where you'll be listening, and tune it in via FM in the house. Beware, however, that XM does drain the car's battery if it's mistakenly left on for a long time. If your radio has an automatic shutoff feature, you might want to activate it. EDIT: CBC, the radio companies make transformer gizmos that allow you to plug your XM into a standard power outlet. As an option that's likely a lot cheaper, you can buy a gadget that adapts a cigarette lighter plug to a standard outlet. You'll also need the wires to plug the XM into your stereo receiver. Chances are that those came with the radio. Otherwise, those wires might come with the "home kit" that contains the transformer. Also, to get sound, you generally use a standardized hookup. You can likely get the cord you'd need for a couple of bucks at Radio Shack. The important thing that's required is a house antenna. That's the biggest cost ($30-40?), and you can't avoid it.