I've been trying to find it on the internet, but can't find anything. The old address for the company is
www.dddrummer.com, but that site is no longer available. Maybe check e-bay.
I bought it new from Sam Ash for about $50. Actually got 2 disc's for $100, one being the dry studio kit and the other being the percussion kit. The percussion kit has bongo's, claves, all kinds of stuff.
Hope you can find it somewhere, I love it. Beats a drum machine anyday (no pun intended there).
Here's a link I found that talks about the software, a review.
http://psbg.emusician.com/ar/emusic_drag_drop_musician/
Check out my band:Havoc Din