don't use tweens to rotate! if you open the movieclips actions (click it, and press F9), just type:
you do that because you are telling Flash to rotate the movieclip on its center-point in DEGREES every time the current timeline frame refreshes. In this case it is 15 degrees, per frame.
If you use tweens, you will end up with a small "hiccup" where your tween ends. Also, increase framerate to 28 or more!
the music is pretty cool but thats it