XBMC add itunes library

Hello

i am running OSX 10.8.2 on my Mac mini, all my movies and tv shows are in stored in my Itunes library = itunesmedia/movies
i can add this folder to my XBMC and it will import all the files but i am not able to play them ?
when i choose a movie in XBMC nothings happen, but when i add movies from another " normal " folder there is now problem ??

is the anything special with the Itunes folder, i have this problem since i upgrade to OSX 10.8

Thanks in Advanced ..