Here is v0.4 of Dance Clone for Windows.
Its mostly the same as it is on Wii but not perfect. At least on my computer the music seems to get out of sync with the steps. On the upside bringing up that home/pause menu (hit the Esc key) pauses the music which doesn’t work with the Wii version.
But anyways I’m assuming most of you aren’t going to actually be using this to actually play the game. If your looking for a music game on PC then there are probably better alternatives. But now you can use this to importing / convert all of your Step Mania step files from the comfort of your computer before taking them over to play with Dance Clone on your Wii.