BBW, use software like MagicISO or Undisker to extract the contents of that damaged CD-R into an ISO file on your hard-disk (that's called a disc image). That's the hard part, because those errors can be unrecoverable so the software won't be able to copy the information, or the CD may have some protection, as I said. Then burn the image to a blank CD-R and it will be error-free. Ripping is the key to the process. Sometimes it works, sometimes it doesn't, but it's worth to try.