I now have two of every song
I transferred my iTunes to an external drive. iTunes is now saying that I have two of every song. I want iTunes to only display one song title per song that I have. It's counting every song twice. How do I do this?
iTunes is fully updated.
iMac, OS X Yosemite (10.10.3), 32 GB of Ram 1600 MHz 3.2 GHz 27"
