Given the "analog hole" this is no possible to protect today.
Did you want to discuss how others make a go of this?
Bob
Please advice me on DVD/CD copy duplicator machine that I can buy to produce my music so that others can not copy it with their computer. Alternatively, if there is a software for copyright protection, please let me know about it. Thanks.
Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic