Ubuntu Multimedia :: Add The Repository To Get The Medibuntu Packages?

I'm using Ubuntu 10.10 (i guess 64 bits), not the Maverick version but the new 10.10. My laptop is Acer Aspire 5715Z.

Now I was on this website and tried to add the repository to get the Medibuntu packages with the following code:

Code:
sudo wget --output-document=/etc/apt/sources.list.d/medibuntu.list http://www.medibuntu.org/sources.list.d/$(lsb_release -cs).list && sudo apt-get --quiet update && sudo apt-get --yes --quiet --allow-unauthenticated install medibuntu-keyring && sudo apt-get --quiet update

[Code].....