Signal offers an interface specifically designed for the iPhone and iPod touch, and takes full advantage of the device's capabilities to provide a two-way, live updating view of your media player.
With Signal you can:
* Play, pause, and stop your music
* Move between songs in the playlist
* Select AirTunes speakers
* Adjust the volume
* Rate songs
* See the current album art
* Browse and search your media library
* Add songs to the queue
* Remove songs from the queue
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