Extra Step but works Rated 4 out of 5 stars
I was confused when I installed this add-on because there was no button to add to tool-bar and no button showed up on the Youtube site itself. I found that if you go to your add-ons and click on the link under the youtube-MP3's extension tab it brings up another page to paste in the Youtube URL for the video you want to convert. So it does work-but not automatically. Make it actually appear on the Youtube site and I'll give it 5 starsThis review is for a previous version of the add-on (18.104.22.168-signed.1-signed).