Works great - But requires payment to enable MP3 feature Rated 4 out of 5 stars

Works great
At this point it does have trouble downloading vids from some pages though.
Here's an example:
http://bit.ly/a72XUG

Update:
I lowered my rating for this add-on because the MP3 feature (saving videos as MP3) is disabled unless you pay money to enable it.
Charging for Firefox add-ons or add-on features is not cool.

This review is for a previous version of the add-on (4.8.6).