How to install Adobe Flash player on Debian Lenny
Enable backports by adding the following line to your /etc/apt/sources.list file
deb www.backports.org/debian lenny-backports main contrib non-free
Import the key from the backports.org archive
apt-get install debian-backports-keyring
Run apt-get update
apt-get update
Install the Adobe Flash Player with one of the following commands depending on whether you like to use apt or aptitude
apt-get -t lenny-backports install flashplugin-nonfree
aptitude -t lenny-backports install flashplugin-nonfree
Restart your web browser and then test your Adobe Flash installation by watching a a flash movie. You should notice that the Adobe Flash Player has been installed on your Debian Linux system.
<object height="344" width="425"><param name="movie" value="http://www.youtube.com/v/oHg5SJYRHA0&hl=en&fs=1&" /><param name="allowFullScreen" value="true" /><param name="allowscriptaccess" value="always" /><embed src="http://www.youtube.com/v/oHg5SJYRHA0&hl=en&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" height="344" width="425"></embed></object>