And a little tip that i picked up along the way.
Well if you have a Cd and it's fairly scratched just apply a small amount of toothpaste on to your finger and then rub it onto the scratch.
Then before it dries up to much grab a tissue or some sort of soft like material and rub of the ToothPaste, it will patch up the scratch and you'll find that your Cd's that would once skip or not work properly should start working like knew.

1+1=2