Preloader.
You also need to cut and compress the song to fit with the movie lenght. The way you are using the song right now it will just be taking up a lot of extra space.
Backgrounds, and dont forget you can zoom in on your sprite sheets, you dont have to have to use them in their original sizes, which you clearly are right now.
Movie was awful in terms of sprite movies, but it was a fair try. 10!