I find your description a bit confusing. Did you use somebody else's melody (with or without permission) to write this song? Though it's not directly part of this review, a detailed description is always nice.
Anyway, now for the actual review. Let's start with the good. As others before me have stated, the song in general is very uplifting and catchy, and has a "solid beat" to it. If you were to change it into a loop, it'd work great for certain types of Flash games.
While some of the melodies sound really nice (combined with harmony), others are a bit too random for my taste (e.g. 00:44 - 01:13). The chorus is great for example, it's just that some of those in-between parts could've used a bit more work. Perhaps it would've been better to actually cut a few layers of instruments here and there, as the song can be a bit "messy" or "too full" at times. This would make the melodies stand out more, thus reducing that "randomness" effect. Another option is to alter the mix through additional EQ and / or compression.
Speaking of the mix, in general I thought it was good. Be careful with those high-pitched instruments though, as they are just about nearing the "danger zone" of listener fatigue. Also, the bass drum could stand out a bit more.
Finally, a few small things. The "Frootza, Frootza, Frootza" thing is a bit odd, if you ask me. I personally dislike it when people "watermark" their songs this way, but to each his own, I guess. The ending of this piece is a bit too sudden, and this is really a shame considering what could be done with it. Lastly, there could be a bit more variety of instruments. I'm guessing you wanted this to sound 8-bit-ish, but try not to limit yourself too much here!
Whew, I think that was one of the longest reviews I've written... Anyway, all in all, a pretty good job! 7/10 Keep up the good work!