On superuser.com I found a link to FeedFlipper (no https, shame on them!) to convert an ITunes podcast feed to a regular rss-feed. This way you can subscribe to the feed with your regular podcatcher without having to have an ITunes account.
Dump the ITunes url in the textbox and they return a regular rss.
http://daveramsey.ramsey.libsynpro.com/rss (no https, shame on them)