OHhhhhhhhh man, big mistakes.
Wow, almost 5 megs for THAT!? Eeek! You've got some serious rethinking to do. First of all, you need a preloader. Secondly, you need to compress you audio, like, BIG TIME! That music file was soooo damn huge. Also, re work you graphics. Visuals aren't really a key element in good flashes for me, but if you're going to splap things together like that, it's just a waste of good potential. Get those first two things I mentioed fixed. If you need quick answers, go to the NG BBS forums. There's a few good flash veterans that will be able to help you out; just make sure you post it in the flash help zone, and not in General (some people might get mad). Good luck in the future. Remember, compress that audio!