On Kubuntu 13.04, I think what you need is the package called
flashplugin-installer.

This is what installs non-free Adobe media codecs into Firefox.

BTW, you can install and test not-included software into RAM on a
running live CD.
Apt-get and Synaptic think the Live CD RAM filesystem is a real filesystem. Any
new software installed is only written to RAM and not to the CD, and how much
you can install is limited by how much RAM you've got. This is great
for testing.

On 4/9/14, Tini <trin@...> wrote:
> Can anyone tell me which codecs I need to download from the
> ubuntu repo in order to play mp3, avi, mpg, mkv, etc files?
>
> I'm trying the Live-CD but nothing plays. I understand this is
> done for legal reasons.
>
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