From sixcolors.com:

Anyway, the great thing about podcasting is that anyone can do it. You don’t need to have access to a broadcasting company’s radio transmitter and studios packed with equipment. You can reach people with your voice right now. Yes, these days there are a lot of big names (often from those big broadcasting companies) doing podcasts, but there’s also an incredible diversity of voices and subjects.

If you’re just starting out, don’t allow yourself to be intimidated by all this audio talk. If you have something to say, say it.

Great advice. I've missed having a radio show since college.

I might give this podcasting thing a go.