I'd like to let you all know that I just finished adding support for MediaMonkey to my native iOS remote control app.
It requires a device running iOS 4.0 and MediaMonkey 4.0 or later.
An iPad-interface is planned to be added as time permits. Any feedback and feature suggestions are always welcome, either in this thread or via email.
More information and the required plug-in are available at www.monkeymote.com