Hey, Jess. There seems to be a problem with the audio file, too. It doesn't play on your site or through feedburner.
In my experience, you have to burn a feedburner from another RSS feed for a podcast.
Confused about where you're hosting/publishing your podcast itself. It might make sense to post it on Libsyn or Soundcloud then burn a Feedburner from the RSS feed that either one of those give you.
Sarah