Embed Video and Audio on Your Site
You can add multimedia content from Vimeo.com, Blip.tv, Ustream.com (and many other providers) using the Embed Code element.
Then get the embed code for whatever you're looking to add to the site. This can usually be accessed via an embed or share button found on or near the content you're looking to share.
Here we see an example of embeddable code connected to a video that is hosted on Vimeo.com
Once you have the embed code, then select Edit Custom HTML to paste it in place.
When you click off of the element, your content should show up there. That's it!