EXTENSION WORKING + DOWNLOAD LINK AND DESCRIPTION Rated 5 out of 5 stars

GUYS!! read this: Here is the file .xpi (extension) download and just move to firefox window and install it. I remplace . jar and make the extension thanks to Vítor De Araújo for the .jar fixed.Links:

http://www.megaupload.com/?d=TCVJVOF4
http://www.culturaotaku.com/custom/1-click_youtube_video_downloader-1.5-fx.xpi

download from megaupload is way better than my own mirror.

read description in megaupload description file.

This review is for a previous version of the add-on (1.5).