Update broke Adobe Flash Player

I am running kubuntu 11.04. Adobe Flash Player was previously working in Firefox. A recent update has apparently wiped out flash player. I cannot figure out how to re-install it. If I visit a page that needs flash player, I am directed to download it from Adobe. On Adobe site I select the version "APT for Ubuntu 10.04+" but when I click download I get this error message: Firefox doesn't know how to open this address, because the protocol (apt) isn't associated with any program.

Searching for answers I found a suggestion to try this command: dpkg -l|grep flash; dpkg -l|grep gnash; dpkg -l|grep swf

Here is the result of running that command:

paul@paul-2011-07:~$ dpkg -l|grep flash; dpkg -l|grep gnash; dpkg -l|grep swf
ii flashplugin-installer 10.3.183.4ubuntu0.11.04.1 Adobe Flash Player plugin installer
paul@paul-2011-07:~$

I do not know how to re-install Adobe Flash Player.