Make sure you are in the advanced editor.

You want to make sure you can see this:


When you click on it, it should bring up a window where you can paste the link of the web page of your youtube video. Once you have done that, you need to type in a Title next which is in between the tags. If there is no title, it will not work properly.

See this post for more detailed instructions. If the button does not work for you, you can manually enter in the tags:

http://www.defendingthetruth.com/off...html#post63793 (Google Video and YouTube)