Youtube downloader

1. video to mp3

http://www.video2mp3.net/

plus addons :Firefox / Chrome Addon 1.0.7

The addon adds a link on YouTube, MyVideo, Clipfish, Dailymotion and Sevenload Video pages to this service and converts the video directly.
If you have problems with the addon or if you have suggestions to improve this please be free to contact us.
You can get the addon also from the Mozilla Addon Page.

Download Firefox Addon
Download Chrome Addon

2. clip converter

http://www.clipconverter.cc

3.FVD Suite software

it integrates with firefox ie has its addon -  toolbar for ff

get it:

http://www.flashvideodownloader.org