I had lots of fun doing this! I also couldn't sleep that night because of all the ideas in my head. This is just a single projector setup so the feedback is a bit blurred because it's focusing on the cube. I'll be using two projectors and laptops when I do this for real in a couple of weeks (see sketch below). Have a look at retchy.blogspot.com for more about the project.
Oh, and the music is something or other by Godspeed. It's a bit of a cheesey combination but I thought it could do with not being silent for six minutes.
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