install restricted extras

Install ‘Ubuntu Restricted Extras’ – codecs/plugins

You need to install the audio mp3 (MPEG Layer 3) decoders as it’s required for playing your mp3 songs), similarly you need to install Adobe flash player on Ubuntu 11.10 for playing flash content such as YouTube Videos (although they are trying to replace the flash dependencies with HTML 5). You can install all these proprietary plugins/codecs by installing the package called ‘ubuntu restricted extras’. Open a terminal and execute the command -

sudo apt-get install ubuntu-restricted-extras

Restricted library/packages for playing encrypted DVD’s

Although you’ve installed ‘ubuntu-restricted-extra’, you still won’t be able to play any proprietary DVD (which is usually encrypted with CSS(Content Scramble System) ). Therefore You also need to install libdvdcss2, a free software library for unscrambling/accessing those DVDs. Open terminal and execute the following commands (You may need to reboot) -

sudo apt-get install libdvdread4 sudo /usr/share/doc/libdvdread4/install-css.sh