well
similar to what the guys below are saying, except 4 minutes is definately not too long for this song, any version of the original is about this length, but it is a bit long for this particular arrangement, too many sections are repeated. What you've got here is mainly really good except for a few sections of clashes (0:47 through to 1:00 has quite a few, 2:06 and 2:18, about 2:25 theres another clashing section... You get the idea anyway...
Some nice string sounds going, especially for fruity loops.
Theres some good work here, just keep trying and do something that hasn't been doen before.
Good luck with more work :)