So, I have to admit, I use MacOS sometimes :o) And sometimes I learn interest things. Do you know podcasts? Yeah, of course. I'm always the last to learn about these technologies. Eureka! Now I can pratice my (bad) english by listening the podictionary while I'm driving. It's amazing!
You (and me) can use ipodder software to listen podcasts in GNU/Linux (ok, you already know that...)