I'm going periodically through our addon icons and check them for
compliance to our guide lines. While yours doesn't violate any of
them, I allowed myself creating a new one for podcaster that has a
smoother look than your current one.
It would be great if you could update, bump version and request a
pull. If not, let me please know.
By the way I noticed that your plugin is called "AudioPodcaster" while
the plugin's path is "audio.postcatcher"? That normal?