Sorry, this post snuck by without me seeing it.
Look in MediaMonkey at the podcast info. What is the value for "Title"? You should be able to say "play song <title>" with a podcast, as with any other track in your library. Most podcasts also have
The podcast needs to actually be downloaded to your library in MM, and then you need to periodically use GenXML to update information about any new tracks that you have added since the last time you did a GenXML.
You could also make a custom command if you want more control over a particular podcast that you listen to frequently, perhaps a command that will always play the latest episode, or one that randomly picks one that you have not yet listened to. I can help you with that but I would need to see the tag info for the podcast in question.