The data on cds is stored in a few places, when a cd player finds a scratch it'll spin around and try to find another replica of the data, this is why you get massive jumps, copying using your computer is a pretty reliable way of fixing this. I personally use cd ripping software to create a new version of the track then burn it back to a cd if required, at very least it gets rip of the big seeking pause you get, usuallly fixing them completely.