Repositories or repos for short are banks of software for Ubuntu sometimes in categories sometimes just specific.   It is highly recomended to enable all repos to have the largest quanity of software availible and can be done by System>>Administration>>Synaptic enter your password when prompted and goto settings from the menu and click Repositories.  Check all the boxes on the first tab except maybe cd-rom so you don't have to have the disk.  Goto the third tab and check any there as well if you have added custom ones.  From here you can also add custom repos via the add button.  Click close and click the reload button you should now be set.

     Adding custom repos there are many ways to do this I will show all the ways I can think of, beyond using the above method.  Below are methods of adding our custom repo which hosts hard to obtain packages of some great software for Ubuntu.

     A few notes: Even though you may be able to download a program from one of our webpages, using the repo method will always ensure you obtain the newest version. Unfortunatly I don't have time to update every page each time a program is updated.

     Similarly, the same goes with Reconstructor rmods, it is highly recomended to right click and save versus copy paste from the webpage to ensure you have the most up to date module.

Open a terminal Applications>>Accessories>>Terminal

copy and paste the repo in that file for example:

Open a terminal Applications>>Accessories>>Terminal

This method will append it directly to your sources.list.  To update your list after appending using any of the above methods:

Enjoy your new software such as Sum - Start-up manager as it isn't hosted on any repo I know of.  To obtain sum for example:

     We will soon have a GPG key to make the "--allow-unauthenticated" go away.  As of current we host the following additional packages: