First me.
I have created music. Promoting is very hard, because many are doing the same. After a long search, making music video clips is the way I want to go. Because the animation part is taken too much time, I want to simplefy it. Music is my passion and not animation, although I like it also. Browsing through this forum I found "TrueSpace." Although it is on a different level as Bryce, I like it, because I can work faster. And I don't have to use a seperate program for characters. But I still have the synch problem.

The sync issue.
This thread is getting interesting because a basic problem could be improved/solved. 
General sound like wind is no problem. It can be added afterwards with something like "Sony Vegas."
Specific sync sound like something breaks, can also be done with the above.
But music and lip sinc are harder. My thoughts on this.

Dancing on a beat can be done by calculating. If you know the beats per minut, lets say 140 bpm, you know on which frame the first beats comes. If you do one left and one right foot beat, fine tune it and copy these keyframes.
Other movements can also be calculated.

Lip sync. I haven't done this also yet, but it can work I think. Make the specific mouth setting for each letter. You don't need them all. "A" and "O" are almost the same for instance. Then, if you want to say "We are the world" in 10 seconds. Paste the key settings for the letters and fine tune afterwards.

Or, use a program like "CrazyTalk" (lip sync program) and paste the face using "Sony Vegas" onto the character. Also I haven't tried it yet.

Leo