Firefox Flash player Ubuntu 10.10 LTS 64bit

In order to get the Flash player for Firefox under Ubuntu 10.10 64bit, it can easily be installed at the command prompt, typing:
sudo add-apt-repository ppa:sevenmachines/flash && sudo apt-get update && sudo apt-get install flashplugin64-installer.
You can refer to https://help.ubuntu.com/community/RestrictedFormats/Flash#installation for more detailed information.