I can't add m4r files to itunes.
I tried adding several ways - drag and drop; import; copying file to itunes folders, including auto add folder; etc. Nothing works. It shows a plus sign and acts like it's about to add it, but it doesn't show up. I can play the file, just can't add it. I shortened it to 29 seconds. I tried editing the info to fill in the artist etc, but I am unable to access those fields. I can see them, just can't type in them. I tried adding someone elses m4r file and it did the same thing. How do I get this to work?
Thanks.
MacBook Air, OS X Mountain Lion (10.8.2)