Flash
From Hackepedia
64-bit on Linux
Download the latest 64-bit plugin
$ sudo apt-get purge flashplugin-nonfree gnash gnash-common mozilla-plugin-gnash nspluginwrapper swfdec-mozilla
$ tar xvzf libflashplayer-*.linux-x86_64.so.tar.gz
Replace the $PATH below with ~/.mozilla/plugins for only yourself as a user, the steps below install it system wide.
$ sudo mv libflashplayer.so /usr/lib/mozilla/plugins/libflashplayer.so
Restart Firefox and type
about:plugins
in the URL bar to make sure it's installed.
