I have an mp3 cd player, which a cd can hold alot of songs. So all my cd's are seperated my genre. Weird Al being my favorite. But on my Sirius radio, I have 30 slots to store a favorite band or song. So when that song comes up on any channel it beeps and pops up to tell me. It also lets me know when the panthers are playing, or if there is a score update.