Authorisation does not work

I have a particular album that when I play a track I get an error message telling me the computer is not authorised, a windo pops up asking me to authorise the compuuter and when I do another window comes up telling me the computer has been reauthorised (great!!)

When I select the track again I get the same error message, time after time.

Does anyone know how to fix this?? all my other albums play fine.