Nice tutorial !
It's been done before, but your explanation is so simplistic the people new to flash can get a jump-start with your guide !
Graphics: 4 (the buttons aren't too nice, but who cares, as it's the content that matters)
Style: 10 (your explanation is so good the flash newbies understand it very well)
Sound: 5 (i'm not a fan of the music, but the on/off button was a nice feature. Btw how did you make the sound fade instead of just stop ?)
Violence: 0 (none) (violence in a flash tutorial isn't what we need :p)
interactivity: 10 (navigation works, the sound on/off button was good, and people learn a lot from it. How high can interactivity get ?)
Humor: 0 (none) (no need to make a comedy out of a tutorial :p)
Overall: 9
very learnsome tutorial, though it repeats what a lot of people have done before.
Good job, and good luck with your future submissions !