I don't think making semantic distinctions is what the copyright discussion needs.<p>The video says that theft leaves one less thing behind. Copying a song leaves one less sale (or one less potential sale) for the company that owns the song. That copying a song is not a physical act resulting in one less song in one place and one more song in your possession is an irrelevant distinction.<p>Copying may not be theft, but both copying and theft are ways of acquiring something through inappropriate means at someone else's expense.