Attached Link: CD Data Recovery

Tom, i dont know if you have tried some recovery programs. But I had luck one time using the linked one. Although my issue was a CD that my PC had a hard time even reading. It did allow me to get 90% of the files off the CD.

I understand your situation is diff. But might be worth a shot. I believe you can try it as a trial still. Thats what i used.

I myself back up to DVD/CD. I am thinking of going to an external HD too.
-Bruce