We produce the shows in the Ogg Vorbis format. The link there will send you to the official site for it and any tools you need to listen to music in Ogg. If you usually listen to the show in Windows Media Player and your player currently will not play Ogg files, this link here should get your player up to speed.
Probably the easiest way to listen is via Winamp. If you don't have it, download the Full Free version and install it. It should play Ogg files by default.
Why Ogg Vorbis? - We've chosen to switch to Ogg for two main reasons. Firstly, because it is open source and free for all to use, unlike the patented MP3 with it's poor quality. Secondly, Ogg simply sounds better. From the testing we've done, Ogg Vorbis has a much more natural sound over the Windows Media Audio which we were using prior to the switch. Since the majority of what we play comes from a pure analog source, we want to get as close to that beautiful analog bliss as we can, and, no format does that better than Ogg Vorbis.
Enjoy.