How can I apply copyright protection to my home made CDs?

There are one or two programs available which will allow you to do this, but Free Lock is the one that stands out above the rest. It runs from a deliberately damaged floppy disk, altering the layout of a CD image prior to recording and thus making the resulting copy very difficult to duplicate for the average end-user (no copyright protection system is unbreakable, no matter what the authors would have you believe). What's more, it's not called 'Free' Lock for nothing! For other alternatives I'd suggest performing a search for 'copy protection' at Game Copy World.