Hello,

I have seen multiple different conditions that I'm trying to understand so please help me out

1) I have several CDs that are in perfect physical condition (as far as my eyes can tell), but the CD ripper says that there are hundreds of bad frames. "Your CD is bad even if you can not see defects" you should say, but then I try again later and it rips without problems. Any ideas?
2) CD seems to be in perfect condition but then CD ripper reports ten of thousands of bad frames and when I playback the CD it sound very scratchy like a very damaged dirty LP. In this case I think that there is no doubt that the CD is damage but I don't know why.
3) Tracks reports bad frames program re-rips and re-rips and at the end the program reports insecure or error. How can you I save this?