Add external links or embedded media

This is a really cool plugin. Thanks for sharing, microkid. I just wanted to ask, if it was possible to add external links or embed media. I have a lot of content on soundcloud and youtube and yould love to include it into the related content lists, so people can find it more easily. Though, not all content is relevant enough to be posted as a separate post.
Is there any way to achieve this?
Thanks a lot!
Andi

http://wordpress.org/plugins/microkids-related-posts/