It would work in the same way as lip-sincing, timing wise. If you right click on the timeline, there will be an option about loading in sound, I can't remember exactly what the options r as dont have maya infront of me. But you can load it in there and the sound levels will appear in the timeline, so you can time the dance to the music, then once done, just reder out the dance, and put the sound with it in a editing or compositing package.

Chris