Decent work I have to say.
I liked how you made proper animation of the sprites.
There are some flaw to the animation however.. The first is that the ending seemed a bit too weird and confusing. I mean, what just happened at the end?
Secondly, I am expecting this to be longer, unfortunately it just seemed shorter than I thought. I mean, wheres Bowser? Wheres Princess?.. and so on and so forth.
The music is perfect for the flash, but if its too short, it is seriously.. bleh..
7/10 for the entire project. Good work.