Install Adobe Flash Player Manually

First, we will need to download the .tar.gz archive from the official website. The current version is 10.3.181.22. Next, open a terminal, go to where you saved the archive and uncompress it:

tar -xzf install_flash_player_10_linux.tar.gz

After uncompressing it there will be a directory, called usr, and the actual plugin, libflashplayer.so. We'll need only this file. The next step is to create a directory called plugins inside the ~/.mozilla folder, where ~ is your home directory (e.g. /home/username/). To do this type:

mkdir -p ~/.mozilla/plugins

And now let's copy the plugin inside the newly created directory:

cp libflashplayer.so ~/.mozilla/plugins

This should do it. Restart Firefox and Flash videos should be working now. This location (~/.mozilla) is a folder where most of the web browsers are looking for the plugin, not just Firefox. So once it's set up in there Konqueror or Epiphany will be able to use it too.