When you find a video you want to add on here, look in the address bar and the letters and numbers after the = sign is what you need.
So for this video, the address looks like:
http://www.youtube.com/watch?v=Frds1xwGcx8
You need this part of it.
Frds1xwGcx8
When you click on the icon
a box comes up, add anything in it you want to call the video, then between the ]Frds1xwGcx8[ add the code, this should work.