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Have listened to the ripped results in my car without hearing anything wrong.
I came accross a wiered error sounding thing while editing one track.
So do the tracks sound ok or not? I've had some CD the indicated ripping errors but still sounded perfect to me, (cases where I never could locate anything sounding bad).
In other cases however where I've had ripping errors they've been clearly audible, often with clicks and rhythmic (but not in sync with music) ticking noises. These ones are pretty annoying.
As mentioned, try another drive. In general it's always your best option with any type of CD ripping error. In this situation I like to try it on as many different (brands/models) of CD/DVD drives that I can get my hands on. In my experience, once a particular drive has major issue with a certain disc then no matter how many times you try or how many different rip settings you try you still end up with some type of problem. (well not always but usually).
Sometimes however you can just take the same CD to a different model drive and it will rip perfectly first time. I've found that CD-burners (as opposed to DVD/CD burners) often read CD media the best. I've still got an old "cyberdrive" CD 16x CD burner (not even sure what real model this was a re-badge of) that's totally magic at ripping audio from suspect media. I keep it in a draw but I'm hanging on to it.