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 10.10

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

 Add mediubuntu repositories   

$ sudo wget --output-document=/etc/apt/sources.list.d/medibuntu.list
http://www.medibuntu.org/sources.list.d/$(lsb_release -cs).list
$ sudo apt-get --quiet update

Update Key

$ sudo apt-get --yes --quiet --allow-unauthenticated install medibuntu-keyring
$ sudo apt-get --quiet update

Install the following packages 
$ sudo apt-get install libdvdcss2
$ sudo apt-get install libdvdread4
$ sudo cd /usr/share/doc/libdvdread4/install-css.sh

Now Play your DVD Movie in your Favorite Movie player