Please delete this if it's inappropriate. A few of my users pointed me to your site and podcast, and I thought posting about my application may be beneficial to both parties.
As a hobby I develop a podcast player for BlackBerry called PodTrapper.
I know a lot of corporate users (like me in my day job) have to carry BlackBerry devices. PodTrapper allows you to download, store and listen to podcasts wherever you are with only your BlackBerry.
There's a 30 day free trial available at http://www.versatilemonkey.com/
Hope this helps!