Newbie With an Issue

Hello members of the DJTT community,
I have an issue with my midi fighter, I have downloaded traktor and I think that I have set up my midi fighter correctly because I followed the instructions in these videos:
https://www.youtube.com/watch?v=XfWv8mM0Oys
https://www.youtube.com/watch?v=D8KNTyIOcI4&spfreload=10
However I seem to not be getting any sound when I press the buttons even though the lights work perfectly fine. If anyone could point me in the right direction I would really appreciated it.

My guess would be that you haven't got imported any mappings in Traktor. Might that be a case?