Unlike MD players, you can just plug in an MP3 player to your computer and add/delete songs as you would any other drive. Also, modern MP3 players can store well over 40GB of both music and data. If you're on a very long trip, you can play days worth of songs without having to change discs or worry about scratching the discs. Plus, if you've got an MP3 player with a video display, you can watch movies and play MP3s with 1 unit
