One of my newly downloaded songs will not play because Itunes says the computer is not authorized to play it. I've never had this problem before after hundreds of downloads. Is there a solution?

Hello there, AlexmUK.

It sounds like you are receiving prompts to authorize your computer, after a recent purchase. The following Knowledge Base article offers some solutions to a few of the reasons iTunes might prompt to authorize your computer:

If iTunes repeatedly prompts you to authorize your computer - Apple Support

Thanks for reaching out to Apple Support Communities.

Cheers.

Sometimes this error is caused by a corrupted download. Try deleting the file, don't hide from iTunes in the Cloud if prompted, then redownload from your purchase history.

tt2