Someone did a proof-of-concept iphone app, so tracking that down and pulling it apart would be a good first step.
Possy went in a different direction, and had started on a mobile web orbiter that has some potential, but I understand he has suspended development pending him actually having a device to test with. It's not based on the traditional LMCE UI1, it's based on the traditional apple UI.
I personally favor the idea of implementing the LMCE UI as an iphone app, but the obvious downside is that it would be less versatile.