Great!
That's an awesome song. I just wish at the end (on the replay screen) I could've heard the end of the song. It's one of those really good songs that I really enjoy the first time I hear it.
Good use of images in Flash, I must say. Not many people can take photographs and do something this well. When the kids turn their heads, though, there are one of two suggestions I can make:
1) Just do it suddenly. Don't worry about fluidity, it doesn't matter much...
OR
2) Take head-on photos of their faces, and just go from one to the next to the next.
Fluidity of animation is what tends to get a lot of people tracked with weird movements. We don't see other people's motions that fluidly, to be honest. We're blinking our eyes, and our attention is wandering even as we're watching people, so their not that fluid in real life. No sense trying to go for it in animation. :D
Just a tip or two...