Single song from album purchased through itunes not authorized

I purchased an album through iTunes a few weeks ago and it worked fine. Yesterday and today, however, I am unable to play one track of the album. When I try, it asks me to log in to authorize my computer (to which it says, it's already authorized). But I'm not able to play this song... I purchased the album via iTunes as a whole album and all of the other songs on the album play fine.

I've tried deauthorizing the itunes and then authorizing it again, but no luck.