authorization of my computer on certain songs from albums I purchases

I purchased 2 albums by YES. When I tried to play them all and burn them to a CD, there were 6 out of all the songs that said- My computer is not authorized to play that song.  When I did the sign-in to

Authorize it, it says the computer has been re-authorized.  Then when try to play it, I get the exact same message again!  Tried same authorization and still repeats the message. So 6 out of what I purchases I cannot listen to, burn, or otherwise use. How come only 6 certain songs out of 24 cannot be authorized?