Install Mplayer in Ubuntu Gutsy Gibbon Feisty Fawn

You need to add the following lines to /etc/apt/sources.list file or you need to make sure you have enabled Universe and multiverse repositories in /etc/apt/sources.list file

gedit /etc/apt/sources.list

enter these two lines and save your file

deb http://archive.ubuntu.com/ubuntu gutsy universe multiverse
deb-src http://archive.ubuntu.com/ubuntu gutsy universe multiverse

Now you need to run the following command to update the source list

sudo apt-get update

Install mplayer using the following command

sudo apt-get install mplayer

if you want to open mplayer just type

gmplayer

or

You can Open from Applications—>Sound&Video—> Mplayer Movie Player

Once it opens you should see the following screen

Installing libdvdcss2 and w32 video codecs in Ubuntu Gutsy Gibbon

Support for WMV, RealMedia and other formats has been bundled into the w32codecs package. This package is not available from the Ubuntu repositories due to licensing and legal restrictions.

For Ubuntu Gutsy Gibbon Users run the following command

sudo wget http://www.medibuntu.org/sources.list.d/gutsy.list -O /etc/apt/sources.list.d/medibuntu.list

Now you need to copy the key using the following command

wget -q http://packages.medibuntu.org/medibuntu-key.gpg -O-¦ sudo apt-key add -

Update the source list using the following command

sudo apt-get update

Install Codecs using the following command

sudo apt-get install w32codecs libdvdcss2

Using above download locations you can install most of the mutimedia codecs for ubuntu.

sudo apt-get update

Mplayer Plugin for Firefox

If you want to install Mplayer with plug-in for Mozilla Firefox run the following command

sudo apt-get install mozilla-mplayer