Installing flash for firefox in xubuntu

This weekend I was trying to get the flash player installed on XUbuntu and working on firefox. Following the instructions on Adobe's site didn't work , but after a bit of googling this is what I did and it worked.

1. Download Adobe Flash Player from http://get.adobe.com/flashplayer/otherversions/. Choose the tar.gz option.

2. Extract the contents of the extracted file to your desktop . The file libflashplayer.so should now be on your desktop

3. Open up a terminal window

4. Enter the following , and replace username with your username.

sudu su

cd /usr/lib/mozilla/plugins/

cp /home/username/desktop/libflashplayer.so .

cd /usr/lib/firefox/plugins/

cp /home/username/desktop/libflashplayer.so .

5. Restart firefox (maybe a couple of times)

6. Test out youtube.com