August 5th, 2012 
Jijo K Jose However, you can install the ability to play popular non-free media formats, including DVD, MP3, Quicktime, and Windows Media formats, by following the instructions below.
Method 1 – Manual Install
Open the Ubuntu Software Center. In the search box in the upper right corner, type "ubuntu-restricted-extras".
When it shows up, click on the "Ubuntu restricted extras" package, then click the install button for it.
Method 2 – Using Terminal
Open terminal and type the following command
sudo apt-get install ubuntu-restricted-extras
But this codec pack won't allow you to play original DVD movies that are encrypted by default.
So again use the below commands to enable "that one" as well.
sudo wget http://www.medibuntu.org/sources.list.d/natty.list –output-
document=/etc/apt/sources.list.d/medibuntu.list
sudo apt-get update
sudo apt-get install medibuntu-keyring
sudo apt-get update
sudo -s
apt-get install libdvdcss2
cd /usr/share/doc/libdvdread4/
./install-css.sh
Now you can play play popular non-free media formats, including DVD, MP3, Quicktime, and Windows Media formats.
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