The sum of it? It doesn't need any additional system drivers for using it with Trakor pro from what I can gather. You just need to plug it in and set the midi in/out setting appropriately from within the Traktor app control menus if you want midi control assign features to work. But I'm just repeating here. Here's the actual thread as detailed by Skratchlounge.


For extra reassurance check this review out over at Skratchworks where they specifically go through the motions using a Mac.

http://www.djworx.com/skratchworx/reviews/zero4.php 

 
The same would most probably apply for Ableton too.