This database that can be personalized (favorite links, time zone, etc) is both a real time directory of what's airing on PUBLIC radio stations around the globe (WBUR, CBC, etc.) but also an excellent searchable directory of even more stations. What's also useful is that in most cases you can go directly from PublicRadioFan.net and open the stream of the station you want to listen to.
Click this link to visit http://www.publicradiofan.net.
Click this link to check out their directory of public radio podcasts, over 1,000 to enjoy! http://www.publicradiofan.com/podcasts.html
NPR Podcasts Directory
This 2007 Webby and People's Voice award-winner includes over 450
podcasts from member radio stations on a wide range of topics - Car Talk,
Speaking of Pets, The 90-Second Naturalist, Sports with Frank DeFord,
GeekSpeak, and more. Browse by topic, title, or provider.
Click this link to visit the NPR Podcasts Directory: http://www.npr.org/rss/podcast/podcast_directory.php
A service that National Public Radio calls "a free, multi-genre,
multimedia Web site that presents the best of public radio music." Listen
to or watch concerts, studio sessions, and interviews, and check out news
Click this link to visit NPR Music: http://www.npr.org/nprmusic.