Napster allowed you to choose what music to listen to (and when and where you wanted to listen to it). On the radio (and MTV, when they actually played videos)

Napster allowed you to choose what music to listen to (and when and where you wanted to listen to it). On the radio (and MTV, when they actually played videos) the choices were made for you. Kind of like network / cable TV -> DVRs, Hulu, Netflix streaming...