Have a look at the latest Wizard in Traktor 2.1.2
DN-SC2000 is not officially supported in Serato Scratch Live. But that doesn’t mean you can’t program this wonderful controller in MIDI. Thanks to Konix and radikarl on Serato’s Forum, there is Jog Wheel Support for Scratching.
I finished the Custom MIDI Mapper XML for the DN-S3700 and Serato Scratch Live. I will now work on updating the PDF and create a video. With Scratch Live 2.5.0, Serato added enabled MIDI out so your precious buttons will light up.