The interface is the same no matter which music source you choose, although categories depend on the source. For example, you could select genre, album, artist, or track from an MP3 CD, from Media System's own hard drive, or from an iPod. When listening to satellite radio, you can choose category and individual stations. Terrestrial radio gives you the option of selecting only from the strongest stations, and also has a genre selection list for stations that broadcast a radio data signal.