Ubuntu DVD playback

/etc/apt/sources.list:

#deb cdrom:[Ubuntu 8.04.2 _Hardy Heron_ - Release amd64 (20090121)]/ hardy main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

deb http://gb.archive.ubuntu.com/ubuntu/ hardy main restricted
deb-src http://gb.archive.ubuntu.com/ubuntu/ hardy main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://gb.archive.ubuntu.com/ubuntu/ hardy-updates main restricted
deb-src http://gb.archive.ubuntu.com/ubuntu/ hardy-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
deb http://gb.archive.ubuntu.com/ubuntu/ hardy universe
deb-src http://gb.archive.ubuntu.com/ubuntu/ hardy universe
deb http://gb.archive.ubuntu.com/ubuntu/ hardy-updates universe
deb-src http://gb.archive.ubuntu.com/ubuntu/ hardy-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://gb.archive.ubuntu.com/ubuntu/ hardy multiverse
deb-src http://gb.archive.ubuntu.com/ubuntu/ hardy multiverse
deb http://gb.archive.ubuntu.com/ubuntu/ hardy-updates multiverse
deb-src http://gb.archive.ubuntu.com/ubuntu/ hardy-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://gb.archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
deb-src http://gb.archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository. This software is not part of Ubuntu, but is
## offered by Canonical and the respective vendors as a service to Ubuntu
## users.
deb http://archive.canonical.com/ubuntu hardy partner
deb-src http://archive.canonical.com/ubuntu hardy partner

deb http://security.ubuntu.com/ubuntu hardy-security main restricted
deb-src http://security.ubuntu.com/ubuntu hardy-security main restricted
deb http://security.ubuntu.com/ubuntu hardy-security universe
deb-src http://security.ubuntu.com/ubuntu hardy-security universe
deb http://security.ubuntu.com/ubuntu hardy-security multiverse
deb-src http://security.ubuntu.com/ubuntu hardy-security multiverse


# from http://ubuntuguide.org/wiki/Ubuntu:Hardy#extrarepositories .....


##--------------------
## UBUNTU REPOSITORIES
## -------------------
deb http://my.archive.ubuntu.com/ubuntu/ hardy main restricted
deb-src http://my.archive.ubuntu.com/ubuntu/ hardy main restricted
deb http://my.archive.ubuntu.com/ubuntu/ hardy-updates main restricted
deb-src http://my.archive.ubuntu.com/ubuntu/ hardy-updates main restricted
deb http://my.archive.ubuntu.com/ubuntu/ hardy universe
deb-src http://my.archive.ubuntu.com/ubuntu/ hardy universe
deb http://my.archive.ubuntu.com/ubuntu/ hardy-updates universe
deb-src http://my.archive.ubuntu.com/ubuntu/ hardy-updates universe
deb http://my.archive.ubuntu.com/ubuntu/ hardy multiverse
deb-src http://my.archive.ubuntu.com/ubuntu/ hardy multiverse
deb http://my.archive.ubuntu.com/ubuntu/ hardy-updates multiverse
deb-src http://my.archive.ubuntu.com/ubuntu/ hardy-updates multiverse
deb http://my.archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
deb-src http://my.archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
deb http://archive.canonical.com/ubuntu hardy partner
deb-src http://archive.canonical.com/ubuntu hardy partner
deb http://security.ubuntu.com/ubuntu hardy-security main restricted
deb-src http://security.ubuntu.com/ubuntu hardy-security main restricted
deb http://security.ubuntu.com/ubuntu hardy-security universe
deb-src http://security.ubuntu.com/ubuntu hardy-security universe
deb http://security.ubuntu.com/ubuntu hardy-security multiverse
deb http://my.archive.ubuntu.com/ubuntu/ hardy-proposed restricted main multiverse universe
deb-src http://security.ubuntu.com/ubuntu hardy-security multiverse
deb http://ppa.launchpad.net/ubuntume.team/ubuntu hardy main # Ubuntu Muslim Edition
deb-src http://ppa.launchpad.net/ubuntume.team/ubuntu hardy main # Ubuntu Muslim Edition
deb http://www.linuxmint.com/repository romeo/
deb http://tskariah.000webhost.com/ubuntu ubuntu main
#deb http://ppa.launchpad.net/kubuntu-members-kde4/ubu...gutsy main
## +++ Backports & Proposed (Ubuntu Unstable) +++
deb http://archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ hardy-proposed main restricted universe multiverse
## +++ Source Repositories +++
deb-src http://archive.ubuntu.com/ubuntu/ hardy main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ hardy-updates main restricted universe multiverse
deb-src http://security.ubuntu.com/ubuntu/ hardy-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
# deb http://ppa.launchpad.net/kubuntu-members-kde4/ubu...hardy main
deb http://us.archive.ubuntu.com/ubuntu/ hardy main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ gutsy main restricted
deb http://us.archive.ubuntu.com/ubuntu/ hardy-updates main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ hardy-updates main restricted
##Universe
deb http://us.archive.ubuntu.com/ubuntu/ hardy universe
deb-src http://us.archive.ubuntu.com/ubuntu/ hardy universe
deb http://us.archive.ubuntu.com/ubuntu/ hardy-updates universe
deb-src http://us.archive.ubuntu.com/ubuntu/ hardy-updates universe
## Multiverse
deb http://us.archive.ubuntu.com/ubuntu/ hardy multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ hardy multiverse
deb http://us.archive.ubuntu.com/ubuntu/ hardy-updates multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ hardy-updates multiverse
## Backports
deb http://us.archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
## Canonical Partner Repository
deb http://archive.canonical.com/ubuntu hardy partner
deb-src http://archive.canonical.com/ubuntu hardy partner
deb http://security.ubuntu.com/ubuntu hardy-security main restricted
deb-src http://security.ubuntu.com/ubuntu hardy-security main restricted
deb http://security.ubuntu.com/ubuntu hardy-security universe
deb-src http://security.ubuntu.com/ubuntu hardy-security universe
deb http://security.ubuntu.com/ubuntu hardy-security multiverse
deb-src http://security.ubuntu.com/ubuntu hardy-security multiverse
## PLF REPOSITORY
deb http://packages.medibuntu.org/ gutsy free non-free
deb http://ppa.launchpad.net/reacocard-awn/ubuntu gutsy main
## +++ Medibuntu +++
deb http://packages.medibuntu.org/ hardy free non-free
deb http://packages.medibuntu.org/ feisty free non-free
#deb http://ppa.launchpad.net/kubuntu-members-kde4/ubu...hardy main
deb http://playonlinux.botux.net/ hardy main


Then,

sudo apt-get update

and

sudo apt-get install libdvdcss2
sudo aptitude install xine-ui libxine-extracodecs


or maybe apt-get, that.