Ok, let me be the stupid one of the bunch....
First off, it does sound like fun (was wondering what some of my forthcoming birthday money might go for later this year), but what would / could you actually PLAY on it once it was built? I saw the part about it being programmable, but that's it. I didn't really see anything about that on the link above - maybe I just missed it.
(Then, as a light brightens slowly on a dim bulb, he begins to wonder if it's not just a simple "do it yourself" thing that really doesn't do much, but just teaches one the ins and outs of design?)