iTunes has unselected all of my songs in my Music Library. How do I make iTunes SELECT and CHECK all the songs in my Music Library?
I've just upgraded iTunes and iOS 5.1. Suddenly iTunes has UNSELECTED every song in my music library. When I pick "Select All" from the drop-down menu, all the songs are HIGHLIGHTED, but none of them are CHECKED. I can't manually check every song in my library. How do I get iTunes to SELECT and CHECK songs in my Music Library?
MacBook Pro (15-inch 2.4/2.2 GHz), iOS 5.1
