I've purchased an album through the itunes store and every track plays except one which continually asks me to authorise my computer. I've tried all the steps suggested above but still no joy. Anyone have any ideas what i can do next? Thanks Paul

Sounds like you have a "damaged track" or "damaged file".

This worked for me today downloading Kendrick Lamar's new Album "good kid, m.A.A.d city".

My situation: I bought the album today for my Mac, MacBook Pro, iPad 2, and iPhone 4S devices.

Issue: One song (only on my MacBook Pro) would not play, instead display "

EX: left"

Solution: 1. Manually delete the song (giving you the error) permantly from the authorized computer.

2. Open iTunes, Click iTunes Store (left sidebar), and locate Quick Links and then click Purchased to proceed.

3. Click "Not On This Computer", find the song that wouldn't play, and re-download it again.

4. Check your Music Library for your song (Should download inside the associated album) and hit play.

EX: (Song I purchased that wouldn't play because of authorization, playing)

Enjoy! 😉

Thanks for this it fixed my problem!