How to play DVD Movies in Ubuntu Linux 10.10

 
See How to play DVD Movies in Your Ubuntu Box Ubuntu 9.04, 9.10, 10.04 (i386, amd64) and 10.10Install the libdvdread4 package (no need to add third party repositories) via Synaptic or command line:...

  Install the libdvdread4 package (no need to add third party repositories) via Synaptic or command line:

$ sudo apt-get install libdvdread4

Run the following command 

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

Another Way