How to check all songs in iTunes
So I have no idea how, but all my songs in iTunes have become unchecked. The answers that seems to help most people isn't helping me though.
I've tried highlighting all songs by doing ctrl-A, and clicking on the check box. Only the song I clicked on becomes checked, while the rest of my music remains unchecked. I've also tried, with all the songs highlighted, clicking on that little "..." ballon next to each song, but the option to "check all selected" is not there. And that is all the answers I could find. Can anyone please help me?
MacBook Pro (13-inch Mid 2010)