Flash Player 9 on 64-Bit Linux

[nethunter]

Since Adobe nor Macromedia before them, never bothered to release a proper 64-bit release of their Flash player, users of 64-bit operation systems such as Windows XP 64-bit, are stuck without Flash players, unless they use a 32-bit browser. Thankfully, under Linux, there's a workaround.
The following instructions are tested under Debian Lenny x86_64, but should work under Ubuntu x86_64 as well. Here's how it goes:
Note: This doesn't yet work with Flash Player 10, so make sure you download Flash Player 9.

• Become root
  $ su
• Make sure nspluginwrapper is installed
  $ sudo apt-get install nspluginwrapper
• Download the Flash player from Adobe's site
  http://fpdownload.macromedia.com/get/flashplayer/current/install_flash_player_9_linux.tar.gz
• Go to the downloaded folder, and extract the files
  $ tar -zxvf install_flash_player_9_linux.tar.gz
• Go to the extracted folder
  $ cd install_flash_player_9_linux
• Make a folder for your 32-bit plugins
  $ mkdir ~/.mozilla/plugins32/
• Copy the actual plugin to the new folder
  $ cp libflashplayer.so ~/.mozilla/plugins32
• Run the nspluginwrapper on it
  $ nspluginwrapper -i ~/.mozilla/plugins32/libflashplayer.so
• Make sure you pass nspluginwrapper the full path, as it doesn't know how to parse relative paths. (In the above example, the shell expands the ~/ to your home folder by itself)
• Restart Iceweasel / Firefox

Flash Player 10 has a different set of dependencies, which I wasn't yet able to resolve and so, was unable to get Flash Player 10 to work this way.

Information for Debian Etch
In case you're using Etch, you'll need to install the nspluginwrapper package by hand. It's available here:
http://packages.debian.org/etch-backports/amd64/nspluginwrapper/download
First, become root (su) and then:

• Go to the folder where you downloaded it, and install it
  $ dpkg -i nspluginwrapper_0.9.91.5-2~bpo40+1_amd64.deb
  

or

• Edit the sources.list file
  $ nano /etc/apt/sources.list
• Add the Etch-backports repository
  Add the line
  deb http://www.backports.org/debian etch-backports main contrib
  to the sources.list file
• Update the deb repository
  apt-get update

And then the above "apt-get install" instructions will work for you.