I have the technology. I've downloaded some free audio software, now I need to read through this how-to site. And I've opened a Box.net free account to store it - though the free account limits me to a 10mb file - which means a couple of short bits of music and some chat. I've been impressed with the quality of the recording on my mobile, which means I can do interviews when I'm out and about.
This is going to be fun, but there's a professional angle too: I want to use the podcast format as part of the repertoire of teaching.