Don't install this anymore! This addon was actually good a few months ago when you could just donwload any video or rip audio from video to Mp3 but now you get a watermark in the videos you download. All of a sudden the addon want you to download and register other stuff that I'm not interested in. I write this review to save your time and not install this addon. Here is what it says when downloading a video:

"You will notice the resulting video contains a watermark in the corner."

"This is because you chose an ADP variant and the conversion feature has not been registered."