Music Won't Sync From Itunes Correctly
I just bought the iPhone 6 yesterday (it's my first iPhone), and my music just doesn't want to sync correctly. I use iTunes and have about 1.6k songs. I'm plugging it in using the usb port and syncing just like I have with all my previously owned iPods. The issue with when I try to play one of my songs, a red square with a red circle around it shows up. This happens for about 70% of my songs and skips to the next available one. I then try to sync my songs again and different songs then become unavailable, while previously unavailable songs become available.
Some of these songs have been purchased through iTunes, some have not. Both seem to randomly not work. I'm wondering what the problem could be? I've never had this problem with my iPod.
iPhone 6, iOS 8