Yeah it's called a PODcast but it doesn't have to be listened to on an iPod "Listen Now" will have to do for this weeks episode, if you want it NOW!
Try http://www.wdwinfo.com/podcast/roundtable74-010108.mp3 instead. That should work. At least it did for me. Once you download it you can import it into iTunes manually.
I'm sure they'll get it fixed as soon as possible.
It's amazing what one single missing digit will do to a computer...computer...computer....computer...
If you have an iPod, right click on the link from the post above and choose "save target as". Just save it to your desktop, then open iTunes and import it (click "File" then "Import"....) It should be saved to your music list, then you can move it to your podcast list. Hopefully that will work for you guys until they get this figured out.