all i can say is: wow!
that intro you had looked like it was really flash, im very impressed. i dont know when (if at all) i may get a chance to actualyl sit down and play with the library, but just from glancing over the documentation, it looks very well done. (documentation is a selling point for me, because if you dont know how to use it, what's the point of having it?)
one of my clients was actually just asking me about animations but i had to inform them that flash can become very dirty when used on a website (especially when a client w/ no web development knowledge wants the ability to update the site, etc), but im sure this would be a wonderful alternative solution for animations.
thanks and good luck with it!