I started thinking about doing a fresh linux install and was worried that I might not remember all the packages that I had manually installed. A quick search revealed a one-liner that compares the currently installed packages to the list of packages that were available initially to produce a nice …

To play dvds first you must install a package:

sudo apt-get install libdvdread4

Next you will run this command and like magic it works:

sudo /usr/share/doc/libdvdread4/install-css.sh

You may need to reboot:

http://askubuntu.com/questions/500/how-can-i-play-encrypted-dvd-movies