Actually Jon, I don't have much interest in your site (not really my thing) so perhaps it's better to ask someone who is a regular visitor? Maybe then you will get a better opinion, a poll on the website or something?

But, I do listen to podcasts....and I think as Anthony mentioned above, this needs a structure, you should script what you're going to do before hand so it comes together better. Perhaps edit it afterwards? A introduction jingle etc?

Just make it more professional. You have a great site and then a podcast that imo damages it.