Thanks for the replies:
@marsminar - I'm beginning to think I should leave well enough alone, but I'm such a tinkerer
@kado857 - I should have mentioned I ran CHKDSK without issue.
@Bare Foot Kid - I saw that posted before, and the only thing I was worried about was that I was using SP1 and I wasn't sure if the recovery CD I made will be good enough as the Win 7 DVD will not load (it recognises it is the wrong version).
But if this is basically the same scan, but without bits of Win 7 in the background mucking things up, I'll give it a try.
**I did have a thought last night but didn't verify it yet: Does CRC also take into account the file's dates? I assume it would. When I compared those speech files, there was a different created date on the HD compared to the DVD.
Also, where does Win 7 store it's checksums? Is it possible to override and say tell Windows to accept a new checksum as valid?