ubun2^beta

Following error while trying to play a .amr format file in video player
 
The playback of this movie requires a Adaptive Multi Rate (AMR) decoder plugin which is not installed.
 
How to install Adaptive Multi Rate (AMR) decoder plugin for Movie player in Ubuntu?

I am using 64bit ubuntu desktop on my machine and my firefox couldn't play youtube or any flash based sites. I can't find a 64bit flash plugin for linux. Maybe somebody would have figured out a solution for this. Please help...

I am getting the following error in Eclipse Galileo while launching GWT application in ubuntu