Impossible to transfer some songs from my mac to my iphone 6
Hi, I have a problem with some songs. I just can't transfer them from my mac to my iphone 6. What I could find in common is that all of them have a blurry cloud at the right of each song, just next to the length. Does anybody know what could that be? most of them are song that I purchased in itunes.
MacBook Pro with Retina display, OS X Yosemite (10.10.4)