Started this before Traktor 2.6.2 when you couldn't map the remix decks, but it came out midway through my postings, so I got distracted and never finished the posts (the project is finished and works though).

http://www.tunecrew.com/2013/07/02/e...rol-f1-part-2/

If anyone is interested though, I'll try and do the final post and put the code up on GitHub

Basically it lets you emulate the Traktor Kontrol F1 w/ an arduino board, and to write sketches in Arduino's language to control the remix decks (no custom mappings required), from hardware MIDI or any other source - so you can make a custom controller - I suspect this is exactly what is happening in the Midi Fighters that can control the remix decks.