This is only for the minimal forms of "protection" which are designed to work with existing CD/DVD players. If you look at the new audio formats like SACD, they use encrypted data. All your lasers won't do you any good unless you can pry a key (and the algorithm!) out of a consumer player, which won't be easy assuming it is in a tamper-resistant unit.
If you believe the article "Myths and Misconceptions about Hardware Hacking," http://www.cptwg.org/Assets/Presentations/ARDG/ARDGHardware_hack05-28-03.pdf , recently posted to the Content Protection Technical Working Group, access to affordable commercial technology for reverse engineering has given hardware hackers the upper hand.
steve
"There is no protection or safety in anticipatory servility." Craig Spencer
