This is the sort of thing I have been waiting to see. Functionally it is a replica of many of the things that the Lemur is trying to offer, but for a much smaller price.

The video below is a demo of the LiveControl application for the iPod and iPad, using TouchOSC.

It allows complete auto-mapping of Ableton Live to TouchOSC.

For more info:

LiveControl for the iPad/iPod from ST8 on Vimeo.