Very nice for just presets.
I'm going to be honest, you and Mirak have the ears of a composer. Plus, it's surprising that only Xionico uses your music. I think more people in the Flash portal should collaborate with you.
When it comes to the instrumentation, I really like how you put the presets to good use. I have no problem with people using the sounds that come with the software as long as the product is good. Plus, you have a nice rhythm going on with this.
Harmony/Melody: As soon as this played, I found this to be quite catchy. In addition, you also have some nice notation with this.
Other: I understand that you wanted high quality sound, but that bitrate you exported this at has a big filesize. Maybe you should export songs in that quality as an .ogg/.oga file since a 192-320 Kbps Vorbis file has a smaller filesize than a 192-320 Kbps .mp3. Too bad Flash has no Ogg Vorbis support at the moment.
-Good melody and rhythm
-The fact that this was made with presets.
Overall: Xarnor, here's a nice nine from me and I recommended you to the following: Miccool, MaelstormM, Toxicacid, and R1665.