Despite the name, the folks at Slacker are anything but. They’ve just announced that their Internet radio service will blossom into a full on-demand system, as subscribers can now have access to a new paid feature that will include the option of finding and playing specific songs, as well as creating their own playlists.
Unlike other services like Rhapsody, the radio feature can come into play even in this mode and will auto-create a playlist based on favorited songs and create a larger radio station out of a user-made playlist. You gain controls such as skipping back through songs.
Currently it can run on BlackBerry and iPhone. There is an Android version coming soon.