<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/a1lmhs-ocIs"></param><embed src="http://www.youtube.com/v/a1lmhs-ocIs" type="application/x-shockwave-flash" width="425" height="350"></embed></object>
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Please stop embedding files/images from Discord. Discord has anti-hotlinking logic in place that breaks links to Discord hosted files and images when linked to from anywhere outside of Discord. There are a multitude of file/image hosting sites you can use instead.
(more info here)