You can buy a kit from this site and make it yourself... Much cooler than the iPod Nano. That thing is so ugly and ill proportioned it hurts me to look at it. Good luck with the kit though, it looks hard.
Also check out Brian Massumi's Chapter on Stelarc "The Evolutionary Alchemy of Reason" in his book PARABLES FOR THE VIRTUAL, where he deals with our knowledge/non-knowledge of perception and sensation in the age of technology and globalisation.
A must go if you are a Jazz Lover and in New York. Unless Woody shoots he is at this classy Midtown Hotel (Jacky and JFK hung here) with his New Orleans Jazz band every monday evening. Word is that he has missed his own Oscar nominations before to play the clarinet on monday's in New York. It's an evening which is so New York that you won't forget it soon. The small hotel bar can house about 120 guests at their tables, no mics or amps are used - all live and if you are lucky you might get a Woody autograph too. (Once he leaves the bar give your waiter a big tip and ask him to get woody to sign your empty wine bottle. He might run off to the back stage entrance to get you the autograph - actually just go there yourself by walking further into the hotel and turn right after the glass door, this way leads you to the exit Brooklyn born Allen takes.