I'd personally enjoy a big fat action button on the landing page that just says "Play" (just like the "i'm feeling lucky" button on the "TV" page). I know you have higher ambitions with the site (social, etc), but, anecdotally, i'm studying for exams right now and don't really have the motivation to parse all that text and creating a new user, but you could've easily had me listening for an hour if the content was easily, immediately accessible. good luck!

EDIT: Who am I kidding, I'm procrastinating so I might as well procrastinate right: It would be nice if the linked videos used youtubes timecode function, to skip intros. It was a bit jarring to hear the presenter in this video, for instance: https://www.youtube.com/watch?time_continue=69&v=IInG5nY_wrU