audiooooo
you really need to fix the sound! the animation and drawing were actually really good, it just seemed crap cos the sound didn't sync with it. Although it was done at a low frame rate, the animatin itself IS really good so don't let the comments get to you. Should be a kinda longer delay between each door opening though, to make the movie's flow more even. Like, story-wise it would make for better timing I think.
As for fixing the sound, well....
all the sound effects should be in separate audio files, and they should be set to "stream" in the flash properties panel. It feels sorta like you've got all the sounds in one big file that plays at a different speed to the movie. If that's the case, then you should set this file to "stream" also and adjust the animation to sync with it.