Reply to Traktor wont play itunes songs

Hi im really new to djing ive been creating music for a long time but never djing so im just trying to figure everything out so i got a dj controller and traktor pro 2 but unfortunately now i cant play my songs i bought from itunes. It worked perfectly when i first got it and the next day when i woke up to try it and i put a song into a deck and it says file cannot be found and i tried everything from trying to analize the files to deleting and reinstalling the program but none of that worked.

if anyone could help me that would be great