Great sound!
Wow this is EPIC! Such a great arrangement and adaptation, you've done a great job nal! One thing I notice was that this piece is incredibly repetitive, and though you managed to keep things interesting adding new variations, there were times I just wanted to it to finish ^^'
The track is a lil bit to dramatic for the Mac imo, I really dont think it would suit the theme, but still its an amazing arrangement so you got my respect ^^
Keep it up and good luck on the contest ^.~