Hi! I recently saw that Youtube changed their buffering system, buffering bits of movies, instead of one whole movie. When I use Flashgot for it, I usually get a list of all of these bits, but no whole movie. This isn't a bit of a problem, as you can claearly copy the url, delete the "&range=XXXX-YYYY" part and download it, but I think it might be useful for flashgot to do it automatically.
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