This is a must-have. I have issues with my connection speed and computer, so streaming video is really not an option. This add-on solves that problem once and for all.

One point though. With all these changes to Firefox you need to allow another app for this one to work fully. I flinched a little at that at first, but there have been no issues. So if that makes you back away from this, don't . It's the most widely useful audiovisual download app I have used in 21 years surfing the net (I still have my first Yahoo email-acc I opened in December of 1997 as my primary private email!)