Medibuntu stands for Multimedia, Entertainment and Distractions In Ubuntu. Its is a package repository that contains packages that you wont find in the Ubuntu package repository.
It has packages for playing restricted formats, external binary codecs packages, skype, google earth and other free and non-free packages that are affected by restrictions.
For Ubuntu Feisty Fawn, enable the medibuntu repository by running the following steps:
- Make sure all the options except for source code are checked in Synaptic Manager->Settings->Repositories.
- Add Medibuntu to your repository list by running the following commands at your terminal.
wget -q http://packages.medibuntu.org/medibuntu-key.gpg -O- | sudo apt-key add -
sudo wget http://medibuntu.sos-sts.com/sources.list.d/feisty.list -O /etc/apt/sources.list.d/medibuntu.list
- Update your repositories.
sudo apt-get update
For Ubuntu Gutsy-Gibbon look here
Curiouser and curiouser! 
that second rep doesnt seem to be working. trying to get medibuntu to play dvds on ubuntu
sudo wget http://www.medibuntu.org/sources.list.d/feisty.list -O /etc/apt/sources.list.d/medibuntu.list
try this!
yes now it does….thanks.
what would i do without you divyad.wordpress.com??
@nirmal
hmmm… you would buy a dvd player!!