How to play video dvd in ubuntu 9.10 karmic Koala

Follows the steps below to play DVD in your ubuntu 9.10 karmic Koala

1. Become root

$ sudo su -

2. Add medibuntu repositories to your sources.list.

# wget http://www.medibuntu.org/sources.list.d/karmic.list --output-document=/etc/apt/sources.list.d/medibuntu.list

Now add the GPG Key:
# apt-get update && sudo apt-get install medibuntu-keyring && sudo apt-get update

3.Update your system.

# apt-get update

4. Now install the libdvdcss library.

# apt-get install libdvdcss2
# cd /usr/share/doc/libdvdread4/
# ./install-css.sh