Rated 5 out of 5 stars

This is a great add-on. Direct mp3 download is so much better than downloading through any 3rd party video conversion site. The interface though could be designed to better fit youtube's site layout. Actually, I've hidden all the element except the download links with Adblock. Now it's really compact. The icons are just a bit on the ugly side and too big for that spot. The mp3 bitrate slider is also too big and unnecessary in my opinion. If it should be visible at all, it should be placed side by side with the download links.

5 stars, as the direct mp3 download is so awesome and the flaws can be fixed with Adblock ;)

This review is for a previous version of the add-on (2.3.8.1-signed). 

Thanks! I'll put options in the options box for a minimal interface for the next release after 2.4.0 (2.4.2 will follow shortly anyway, youtube broke channels, again :(... ).