Buy a bottle of mineral water or distill tap water using a water filter.
Pour about 4 cups of water into a mixing bowl. Add one drop of dishwashing liquid to the mixture and stir thoroughly.
Dampen a clean, lint-free cloth with the liquid. Wipe the cloth over the scratches on your CD. Wipe in a linear motion from the center hole to the edge.
Locate the scratches on your CD. Hold the readable part of your disc up to a light source to help you find the scratches.
Apply a small amount of toothpaste to a clean, lint-free cloth. Gently rub the paste into the scratches. Wipe the cloth over the scratches, in a linear motion, a few times. Apply more toothpaste if necessary.
Hold the readable part of the CD under some running warm water. Gently dry the CD with a clean, lint-free cloth.
Open your CD-burning software by clicking on its icon. Insert the repaired CD into your computer.
Click on "Import" in your disc-burning software; your scratched CD should now import to your computer.
Create a burn list or new playlist, or something along these lines depending on the program you are using, and drag your imported CD file into it. Insert a blank CD-R into your computer and click on the "Burn" tab.