Wahey, finally got this to work, had to use Internet Explorer.

Lovely kick on this. A nice solid high bass slap.
Yeah, nice groove.
I`d say the most obvious problem is that the top end, and the kick are in perfect balance, but the mid percussion range lacks definition and punch and also sounds a little dry.
The synth stab is a little dry, and could maybe do with just a little wash of delay or reverb, and maybe some more valve type saturation as it sounds a little too plastic and digital.
I`d maybe get a bit more size into the bass for added pump.
As a simple DJ tool this works very effectively, I`d just say that it needs a touch more warmth and a few corrections and it`ll do the job when thrown into the mix.