extract song from youtube videoDoes any one know how to extract a song from youtube?

Does anyone know of a way to extract the songs from youtube videos so I have them on my computer?
go to http://www.zamzar.com copy the URL of the video u want the music from, Select "Convert to MP3 (Audio Only), type ur email adress, and within about 10 miutes an email will be sent to your email adress wiextract song from youtube videoth the download link on the MP3 Audio
www.vixy.net copy the url of the youtube video you want and paste it there, then go down and select mp3 only, but it's illegal

and sometimes it doesn't work so be patient, but again it's copyright infringement
yes theres this thing called the youtube grabber. search extract song from youtube videothat and you might be able to find where you can download it.
you can try moyea flv to video converter tool.
(1)Download youtube to your pc;
(2)extract the downloaded video flv to mp3, wma audio;
read this tutorial step by step

there is a download box on near the video somewhere