I recently put together AstrologyPodcasts.net, a site that compiles the most recently-released podcasts from various astrologers. It features links to the actual mp3s, so you can listen on your computer or download to your hard drive. The site is also mobile-friendly, so you can listen to podcasts on your iPhone without having to go through iTunes.
If you’re a WordPress geek, this is how it works: I installed the Multi-Feed-Reader plugin, which allows you to feature various components from iTunes XML feeds. So to feature the mp3 for a podcast, I just enter %ENCLOSURE% into a template, and the plugin will pull the mp3 link from the feed. Unfortunately the plugin does not support shortcodes, so I can’t include a “play” button.
The easiest way to find the XML feed for a podcast is to subscribe to it in iTunes, then go to “podcasts” and right click on the podcast to copy the podcast URL.