Yahoo Music Jukebox is a fully featured media player an organizer with many powerful features. Its features include CD ripping and burning, access to LAUNCHcast and the Yahoo! Music Unlimited music subscription service, playlist creation, transfer of music to select portable devices such as mp3 players and USB flash drives. The program allows Yahoo! Messenger users to stream music to one another (not to be confused with uploading and downloading or filesharing) and browse one another"s playlists. Only those subscribed to Yahoo! Unlimited can add entire songs to their collections, however. The engine also has a number of plugins available for free download from the program"s official website. The programming interfaces for the engine are open; anyone may create a plug-in or skin to modify the behavior of the engine.