Itunes Issue

I downloaded an album in iTunes and all but one song will play. It states in order to play the song I have to authorize this computer, but it is and was purchased/downloaded under the account the other 17 of 18 songs were purchased. Has anyone ever seen this happen and what can I do to fix it?

I wonder if that one song in the album is protected by DRM? Can you tell us which album it is and what song refuses to play?

Thanks

The album was Glee volume 1, but I got it to work by deleting it and redownloading it from iCloud. Thanks for offering to help! I figured it was just a glitch which corrected itself when I redownloaded.