So...
You stuck a bunch of sound clips together, from music you did not make yourself, and attached them to play/stop movie clips, which you may or may not have created and programmed yourself, with barely visible animations in the background, which you may or may not have created, in a Flash that ends up being...seven megs large? And did you perchance happen to optimize the sound in this?
Next time you submit something, kindly demonstrate your own mastery of the tools available to you. If you like music, try making music and submitting it to the Audio Portal. But a simple playlist is something you can put on your MySpace. I'd like to see something a little more creative.