Installing VLC on Ubuntu GNU/Linux
You can install VLC using the apt-get program (or its GUI, Synaptic). Make sure you enabled the Universe repository and type the following:
$ sudo apt-get install vlc
Look out: there are many deprecated vlc based packages, like gnome-vlc, etc. Just installing vlc will do.
Separate video window
In Ubuntu 9.04, the video is always rendered in a separate window. This does not affect other Ubuntu releases. Update to Ubuntu 9.10 if this is a problem for you.
If you have audio problems after upgrading Ubuntu, reboot. Your kernel might need to be refreshed.