Okay, I guess a lot of people still do listen to radio. I suppose it will always have some use for people.
For those of you who don't know what a Podcast is, it is basically a talk show in a downloadable format. They have them on all of your favorite subjects. My favorites are The Adam Carolla show, the Joe Rogan Experience, Star Talk, Hardcore Historey, and MMA Junkie. I like Podcasts because they are not censored or influenced by big business so the content is pure. You can search all of the different ones on itunes under Podcasts. I suggest you take a look as you may find some on topics you enjoy.
I also have an app on my phone called Stitcher. It allows me to stream most Podcasts straight to my phone so I don't have to manually download them.