http://www.mp3-box.org/youtube-to-mp3-yahoo-answers/
Youtube, converter question thing. Website can’t find.?
So, a little while ago I was looking up how to convert a youtube video to an audio file. I found this yahoo answers resolved question that led me to this PERFECT website all you had to do was like put some code from the video (like the url or embed thing) and it just quickly converted than I downloaded the mp3. No downloading of software or complicated directions just plain and simple. But guess what? Now I can’t find the website or the yahoo answers question. Please help if you can. There may be website out there similar or something, doubt you can find the question, but it’s worth a shot. thanks
This one works perfectly for me. Even downloads videos if they are in HD 
http://www.onlinevideoconverter.com/
Enjoy 
Hitler Gets Banned From Yahoo Answers