Adding extra repositories (Firefox, here I come!)

sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup
sudo gedit /etc/apt/sources.list

Edit, as described in:

http://ubuntuguide.org/#extrarepositories

Then add repositories:

sudo apt-get install:

mozilla-thunderbird
mozilla-firefox
gaim
frozen-bubble ;)

Complete Package list

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