Dustin Hartzler

The plugin includes the option to display a random (one or more) album artwork image in your sidebar using the built-in widget.
Album Art images can also be displayed all on one page. Simply put [aho] in the body of the page.
Be sure to read the included documentation for style and configuration help.

As Heard On

This plugin is built to showcase other podcasts that you've been interviewed on. Displays podcast artwork in a widget or on a full page.

libsyn

Libsyn Hosting Account Required
Not already hosting with Libsyn? Sign up at <a href="http://www.libsyn.com" rel="nofollow ugc">http://www.libsyn.com</a>, or contact <a href="mailto:support@libsyn.com" rel="nofollow ugc">support@libsyn.com</a> for details.
Libsyn’s Publishing Hub allows for the perfect workflow for publishing podcast episodes straight from WordPress and into your Libsyn show. Features such as episode creation, Apple Podcasts optimization tags, creating ID3 tags, automated feed/show migrations, pulling in previously published episodes, and advanced scheduling bring some of the best of Libsyn’s publishing options to your WordPress website.
Media file uploads direct to Libsyn, as well as by using already loaded WordPress media or access your Libsyn FTP Dropbox all from one place.
The best part is your media files stay hosted with Libsyn, and your RSS feed will still be generated by Libsyn as well, meaning your web hosting server remains unaffected by your podcast and your RSS feed and media files are unaffected by your web hosting server. It’s the best of both worlds.

Libsyn Publisher Hub

It's a great plugin, the code needs to be updated to make the backend of WordPress not break. 

Otherwise, it does as is advertised.

Style Sheet Breaks Meta Boxes

The Libsyn Publisher Hub plugin allows Libsyn producers to publish their podcast right from Wordpress for easy management of their show.

As Heard On vs Libsyn Publisher Hub