I copied a snipped from the medibuntu website to explain what it is and how to add the repository to the sources.list. See this link to get the whole page:
https://help.ubuntu.com/community/MedibuntuIntroduction
Medibuntu (
Multimedia,
Entertainment &
Distractions
In U
buntu) is a repository of packages that cannot be included into the Ubuntu distribution for legal reasons (copyright, license, patent, etc).
Some of these packages include the
libdvdcss package from
VideoLAN and the external binary codecs package (commonly known as w32codecs) used by
MPlayer and
xine.
Install in Gutsy
- Ubuntu 7.10 "Gutsy Gibbon":
sudo wget http://www.medibuntu.org/sources.list.d/gutsy.list -O /etc/apt/sources.list.d/medibuntu.list
- Then, add the GPG Key:
wget -q http://packages.medibuntu.org/medibuntu-key.gpg -O- | sudo apt-key add - && sudo apt-get update