It might be a bit late for this...but hearing it now this remix is rather interesting..

Structure: 8.5/10
Seeing as how this is meant to sound like something played by a garage band consisted of 3 electric guitars, 2 keyboardists, a knob twister and a drummer.. it's a little funny but it makes sense the way it's set out.
For a 'rearrangement' of the actual melody, it's good but I found it a little too long; much better suited for something as to a 'House' genre of music. (80's beat, much upbeat with repeating loops 4 by 4.)

Sound: 7/10
Those extra arpeggios caught my attention. The instrumentation 'could've' been better, but seeing there had been a fair amount of effort to the whole 'remixing' thing...it's understandable. (Listening through a Yamaha XG synthesizer)
Drumline; it's suitable but some of the silent parts didn't sound right with it playing quietly.

Overall: 8/10
Never expected or seen a remix of the 'LabRatory levels' from JJ2. I will be looking forward to any more coming, rock_ten.

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There's a version of JJ2 with S3M/IT files!? Where!?

EDIT: A MIDI file should never exceed 600KB!