Playlists are a useful way to organize your digital music... if you have only a few hundred songs. Once you have thousands of songs, it becomes a chore to modify playlists to suit changing tastes / moods. Also, playlists become completely impractical when you have to suit the musical tastes of various household members. JukeBx changes this. It creates playlists as it plays that it creates based on how you, and nine other users, rate the song.