Ok, First Off...
Don't ever use the preset vocals from the Fruity Loops library. It simply ruins everything in a song, because it screams noob. I'm not hating, just stating the facts.
The song itself is pretty interesting for a demo. The beats are very intense, and the synths aren't bad. Although they are mainly presets, which you should look into fixing. I'm not so much a hater of presets, but you gotta make them unrecognizable if you use them. Because people will down vote your song for using them.
There are hundreds if not thousands of free sound fonts and VSTs out there you can use. Ya just gotta look for 'em. :-)
The different sections are really cool how they contrast with each other. You were able to make them flow into each other very nicely too. And that is so important. There has to be a good flow in a song for it to work, and this flows pretty well in my opinion.
Overall I like it. But the Fruity Loops presets are making it hard for me to give you a great score. Soooo...
4/5 and 7/10 overall. A good score, but not quite great. And right now I think that is about where this song stands. Good, but not quite great.
-Gravey-