This is a post written for the iWeb Control blog. The original post was included in a Trac ticket to support the inclusion of Mixcloud in WordPress Core and it looks likely that WordPress 4.0 will indeed introduce native oEmbed support for Mixcloud.

WordPress comes with a built-in whitelist of oEmbed providers. oEmbed allows us to easily embed content from various providers without worrying about ever-changing embed code.
Mixcloud is not currently in the list of supported providers. Mixcloud suggest installing the Enable oEmbed Discovery plugin which allows editors…

Add Mixcloud oEmbed support to WordPress