I'm not sure that TheShadow got more than one thought/idea. So here are a couple more. (Sometimes the simple ones work).

1/
Wash the original CD in warm soapy water. Often works if the misread is due to dirt in a surface scratch. Too deep and the original is knacjered.

2/
If you have an original disk, then rent a copy of one in better condition from Blockbuster and copy that. Seems to me that keeps you more or less legal.

As it's a while since you started this thread - what's been happening?