OK relax. Mp3's formate is a copy right and pat protected in most countries
around the world. Ubie would not be free if the Codecs for mp3 or dvd came
installed. Mandriva has a extra cd that cost money. Reason why us that comes
with need to pay for codecs. There is several ways to get what you want. One is
to install Automatix. This will install a butt load of codecs.
www.getautomatix.com/.../index.php
A other program script to run codecs is Easy Ubuntu
http://easyubuntu.freecontrib.org/
And to do manually is
https://help.ubuntu.com/community/RestrictedFormats
I would start with Automatix.