I have, on very rare occasions, seen videos on Youtube muted for copyright issues on the audio. I don't how they choose to do that over taking down the entire v

I have, on very rare occasions, seen videos on Youtube muted for copyright issues on the audio. I don't how they choose to do that over taking down the entire video, nor if they still do it, though. http://mashable.com/2009/01/14/youtube-mutes-videos/ http://mashable.com/2009/01/14/youtube-mutes-videos/ for a random (and old) reference.