MacXM is a perfect way to enjoy XM satellite radio. You MUST have an XM PCR in order to use it. They are no longer made, so hit up ebay if you want one. READ DIRECTIONS CAREFULLY!! You must install a special driver! You can find the driver download page in the getting started guide. Read the "getting started guide" carefully! It is a Java app. This app is loaded with features such as iTunes searches and what not.