Use the following instructions:

1. Install the getdeb package.

2. Or configure the repository manually:

   Go to System-Administration-Software Sources, Third-Party Software tab, Add:

   deb http://archive.getdeb.net/ubuntu quantal-getdeb apps

   Add the repository GPG key, open a terminal window and type:

   wget -q -O- http://archive.getdeb.net/getdeb-archive.key | sudo apt-key add -

3. Click the "Install this now" button below the screenshot of the desired application.

4. If you are using Kubuntu please check bug 476853.

5. If the application cannot be found, run this command and try again:

   sudo apt-get update

hide this from showing in the future