Removing the foil from a CD is a fairly simple process. You will need a sharp object, such as a knife or a pair of scissors.
Start by locating the edge of the foil. Cut along the edge of the foil until it is completely removed. If there are any stubborn pieces of foil remaining, you can use a knife or a pair of scissors to cut them off.
Be careful not to damage the CD. Make sure that you do not cut into the CD itself, and be careful not to damage the label.