Remove stray </p> tag.
Better height for the audio shortcode container and controls.
Ooops!  Revert height change on .mejs-controls.
Featured images for videos.  Bam!

This change adds the video attachment featured image (sub-attachment) as the 'poster' attribute (if not set) when the [video] shortcode is called.  Then, it falls back to the current post featured image if in The Loop.
Minify style changes.