Hi,

I am also a Knoppix newbie so if there is something wrong in my text below, I would like the gurus to correct me

Knoppix is based on Debian. You can find all the information you need to start from http://www.debian.org. I recommend that. For your problem I suggest you to see APT HOWTO in http://www.debian.org/doc/manuals/ap.../index.en.html.

What you need to do is:
1. Run 'apt-config' to select the site(s) where you want to connect. Closest one is generally the best one. These sites holds the installation packages for Debian that you can download and install with apt-get.
2. Run 'apt-get update' (I do not remember if it runs automaticly after apt-config).
3. Find name of the needed program 'apt-cache search realaudio'. You will get a list of packages containing that text. Lets say there is a package named 'realaudio'.
4. Run 'apt-get install realaudio'
5. Most probably you need to say 'y' one ore more times. After the process ends you should have a new application in your menus.

I like how apt-get works. It basicly takes care of everything on finding, downloading, installing and removing programs.

I hope this helps you. And I wish I did not make any errors in my explanation.