When you want to install something that is not open source then you usually need to enable non-free and contrib repositories, or equivalent, in Debian based systems.
Note. In PostX Gnu/Linux 0.4.1 contrib and non-free repositories are automatically added to the binary by default. You can also install every driver+flash (that are mentioned within this post) easily by doing sudo apt-get install driver within a terminal.
First, you will need to modify your sources.list Continue reading