Good stuff.
I really like this one. Like the other guy said, the chiptune-ish beeps give it the perfect feel for a flash game tune. Someone should pick this up and use it in their game.
As far as criticism... it could probably use a little more dynamics and maybe have some more parts to it... but that's just nitpicking. I try to save my 5-star votes for tunes I feel are absolutely flawless - but this one is in the next tier IMO. Good work.