Another way is to copy the url from the video you want to post. Then write "view" with a semi colon, and put square brackets at the beginning and the end of the link. Click preview at the top, and click post. This is what it will look like. Just don't leave a space between the bracket.
[ view:http://www.youtube.com/watch?v=MoaDMRo9kjM&list=FLsUR_xEmBCJiLbFvITnVHIQ&index=20&feature=plpp_video]