Play ends when song ends - Shuffle and Continuous Play not working

Question

I'm pretty sure I did not install an update prior to this starting. Since the problem began, however, I uninstalled iTunes and reinstalled to see if that would solve the problem and it did not.
I typically play songs, on shuffle, from my main library. When I open iTunes shuffle is automatically selected and I click on the play button to choose a random song. Since this past thursday when I click the play button nothing happens. I have to manually choose a song to play. Once the song has ended iTunes does not choose another song (if on shuffle) nor does it play the proceeding song on the list (if on normal play). In order to play another song I have to choose another. Once that song ends I have to select another and so on.
I have checked the settings and I don't see anything that could be effecting the way iTunes plays the songs.

Answer 1

*Figured it out*
Somehow, all of my songs where not checked....