Downloading Video & Audio
*Youtube Downloader
http://www.download.com/YouTube-Downloader/3000-2071_4-10647340.html
*http://keepvid.com

*Two Best Converter Flv to mp3*
http://www.convertflvtomp3.com/
http://www.flv2mp3.com/

*Others*
http://www.video2mp3.net
http://www.savevid.com
http://www.2getflv.co.kr
http://convertmytube.com/
http://c05.filsh.net/main.html

youtube 고화질로 다운받기 - firefox 필요
http://googlesystem.blogspot.com/2008/04/download-youtube-videos-as-mp4-files.html