1. http://www.youtube-mp3.org/
2. http://www.video2mp3.net
3. http://www.dvdvideosoft.com/products/dvd/Free-YouTube-to-MP3-Converter.htm
4. http://youtubemp3.tv/
5. http://www.convertvideotoaudio.com/
youtube to mp3 conversion is the tool for converting youtube videos to mp3 format.Online youtube to mp3 converter,youtube to mp3 conversion software, youtube downloader and addons to browser are the several tools provided.
