cant get spotify or itunes to work

Just bought Djay Pro and neither itunes or spotify work?? each time i try to play a song on itunes I get the following message “the track cannot be played because it is not available”???

itunes tracks have to be physically on your hd not in the cloud and you need spotify premium to play tracks from there

Open itunes and see if you can play the track there. Make sure there aren’t two versions of the song, one working and one not working. Your files might have gotten moved?