One day a couple weeks ago, I got linked to this Kraft website. I paid the shipping and handling ($6).
I now have (still sitting in a box at home), one Kraft Dancepad. There are games linked on Kraft’s website, but I’m told that with a little hardware modification (for which I’m going to have to dig up my soldering iron and see if it still works), it will work with the opensource StepMania.
I’ll post later on my success.