Sometimes you you want to play some music or video but it doesn't allow you because it asked for some strange codecs that you may not understand :)
Good news is, it relatively easy to download most of them all together.
Switch to super user
sudo -s -H
Update and upgrade your present system by using these two separate commands
Here's now the magic; install the following common codecs
apt-get install gstreamer0.10-plugins-ugly-multiverse gstreamer0.10-plugins-bad-multiverse gstreamer0.10-plugins-bad gstreamer0.10-plugins-ugly gstreamer0.10-ffmpeg libxine1-ffmpeg libdvdread3