If the speakable structured data is not getting added to your posts even when it's turned on in the settings, your template may be missing the wp_footer.
Adding the correct structured data for the Speakable Specification is usually just a matter of toggling the "Include structured data" setting in the Soundcheck sidebar.
But if your posts are still not validating, it's possible your theme is missing the wp_footer() code. Soundcheck, along with many other plugins, relies on this to run.
Your theme should include something like the following:
/* Always have wp_footer() just before the closing </body>
* tag of your theme, or you will break many plugins, which