Josh went one better and adapted it to a hella rad turntable interface.
I love this sooooo much! Check it out:
Wanna build your own Scratchbox (or Scratchbox-inspired awesomeness)? Check out my full illustrated Scratchbox build instructions on the MAKE magazine website.
For a brief history of the credit card magstripe that makes this all possible, check out the first bit of this Planet Money podcast: Episode 695: Put A Chip On It : Planet Money : NPR: