Im trying to help a friend of mine (that has linux installed and which i know like nothing about...) The problem is he says that when he tries to install adobe flash.player it just says something like "mozilla firefox cant accociate the filetype youre trying to run" blablabla...thats what i got from it anyways...So maybe some of you guys/gals here can help me.

Firstly what Distro is your friend using? Most common distro's these days allow for automated flash player install via their "Install Software" controller. For example in OpenSuse it's YaST > Install Software then just select Flash Player.

If you want to do it all manually the simply download the Flash Player .so file and put a copy in /usr/lib/browser-plugins and /usr/lib/flash-plugin. Those locations (without the quotes obviously) are where most browsers will check for plugins, additionally there will be a folder for Firefox specifically but don't know it off-hand. For Opera it's /usr/lib/opera/plugins so Firefox will be something similar.

After copy .so file to those locations, then just restart browser and it should be working.

Install Flash Player 10 Under Ubuntu Linux

http://www.cyberciti.biz/tips/linux-instal...-player-10.html

Moving to LINUX HELP

Should get more action

which distro is he using ?

You can use the same method in X64:

Do this with browser closed.

Download 64bit flash:

http://labs.adobe.com/downloads/flashplayer10_64bit.html

Open terminal in the download folder, and do:

sudo tar xzf libflashplayer*

sudo cp libflashplayer.so /usr/lib/mozilla/plugins/

rm libflashplayer*

My ubuntu distro,

The window that pops up in firefox daying "unable to install this plugin"

Underneath this is a clickable link to install manually

try this
download the script and try running it
hope it solves your problem

#open a command prompt, this will work as long as your distro has apt, yum should be very similar
sudo apt-get install flashplugin-installer
#enter your password and if prompted enter Y at the Y/n prompt to install.
#try to go to youtube, no luck then reboot and go to youtube, runs well with latest kernel