If you can rip or copy some audio CDs, but there is one that isn't working, it may be dirty or scratched. (This is especially true if the CD drive is blinking continuously.)
Sometimes you can simply put it under water and scrub it with your hand. Make sure to not scratch it. Then dry it with a soft/non-abrasive cloth and try it again.
If the CD is scratched, you might be able to try a resurfacer such as CD/DVD Doctor. You can find those resurfacers at almost any movie rental place, Radio Shack, Best Buy, Frys, Comp USA, etc.