I've been looking for a decent iTunes remote control for my touchpad for ages. It seems that the developers of some of the older iTunes remote controls were not interested in developing further, especially to support the TP format. Now there is retune... and it's free! Yes, a free iTunes remote... and it's bloody brilliant! So Brilliant, I gladly donated to the developer.
I could do everything I wanted to do with the app, even select airplay speakers and to send to AppleTV.
This app has been well thought out and has had a very professional job done.
Highly recommended if you use iTunes.