Rated 5 out of 5 stars
It works fine in Firefox v19, but the way it reacts is different now. Still works as before but it doesn't keep track of progress. For me I get a white box with the video title and it's progress is listed as 0kb. I turned sound notification on, so when it goes bleep... I immediately notice the once white box has turned green (custom colour scheme) and barely a second after that, it disappears. Maybe I have to adjust the disappear time again.