Tango is available at the App Store. You'll need to install it on the docked ipad and on the remote control device. (I use my iphone, but ipads work too.) You run Tango on the docked ipad as the slave and then run it as the master on the iphone. That gives you control over your docked ipad's itunes list. I need each song to stop after playing, but the default is to play the next song. You can add songs to the play list on the fly. You can use a full playlist as is. (Or choose to play in reverse order.) If the delay isn't an issue, you don't need it, but if you want instantaneous response, Tango is hard to beat.
