Why not plug your site? http://player.fm/series/hnpod (episode home link should be http://player.fm/series/hnpod/how-we-keep-github-fast-amazon... )

Why not :).

I do want to improve those series-specific pages to show related series and more info about recent episodes.

Yeah, an embed feature like with mixcloud could work, having it remember and display what I've played, a friendly email (or tweet) upon new release, and a site changelog would all be useful!

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