I am working on a project where I need to use an Iphone to play source material through a projector and speakers. i think that the 4S would be best as it has the ability to output 1080. I'd like to create a sort of playlist where I can trigger some sound and some video in sequence. The Iphone will be embedded though- so I'd like to come up with a way of having a tiny remote button to act as a sort of mouse click for the iphone presentation, letting me play the next item of material.. So.... has anyone any tips? How would I create a playlist? How would I click through the items?