I was looking to do that. In fact, I downloaded that Quartz program a couple months ago. My computer is not that good however. Others on this forum know that I'm completely blind. My sound card is very temperamental when it comes to running my speech software and audio equipment simultaneously. I need to upgrade soon, but haven't got to it yet.

The dance card is pretty cool. It has enough grooves and sounds to satisfy my needs. I have only a passing interest, so it works for me. A small group of hiphop, acid jazz, techno, and house loops it just what I wanted. Enough to add some cool elements to my songs without going hard core.
One thing I don't like is that the grooves aren't very editable, (IS that a word?) Some of them have various whistles and bells in them that I'd like to edit out, but it can't be done, so I must live with it or not use the groove. There is a nice variety of drum sounds though so I can make pretty good rhythms without the loops they provide.