This document describes how to set up Songbird 0.5 on Ubuntu 8.04. Taken from the Songbird page: "Songbird is a desktop media player mashed-up with the Web. Songbird is committed to playing the music you want, from the sites you want, on the devices you want, challenging the conventions of discovery, purchase, consumption and organization of music on the Internet."
This howto is a practical guide without any warranty - it doesn't cover the theoretical backgrounds. There are many ways to set up such a system - this is the way I chose.
Open http://www.getdeb.net/app/Songbird within your preferred browser and click on the link for the latest version for your architecture.