OS X Update...
With iTunes 4.9, you can now browse and subscribe to podcasts from within the iTunes Music Store. Podcasts are frequently updated radio-style shows downloadable over the Internet. You can also transfer podcasts to iPod, for listening on the go.
AND...
iPod software update 2005-06-26 delivers iPod Software 1.2 for iPod with color display, iPod mini Software 1.4 for iPod mini and iPod Software 3.1 for iPod with Click Wheel
Integration with iTunes 4.9 for downloading and listening to podcasts