Another tool in my grab-bag of YouTube video downloading tools. This add-on works well on a lot of videos. Sometimes the MP3 feature does not work, and sometimes certain video qualities are not able to download, but what I have discovered with YouTube is there is no free tool that downloads everything perfectly. That's why I have multiple different add-ons. This one is a great tool in the bag. Pro-tip: You can always convert a video you've downloaded into an MP3 easily with several different free programs that you can find online.