You should listen to these somewhat frequently updated casts: 
- This Week In Tech – generic tech industry blabber
- The Register’s Open Season – open source business talk
- FLOSS Weekly – free software / open source
- Lugradio – Linux related
- Linux Action Show – Linux related
I also keep a static page with postcasts I listen to. Any suggestions for other, more or better casts out there?
I had to register to post this…
But it’s worth it.
Radiolab.org , highly recommended. It’s a 1 hour show, the hosts are very good.
As for start you might want to check “Musical Language” :
http://www.wnyc.org/shows/radiolab/episodes/2006/04/21
Let me know what you think about it.
Not really my cup of tea, as the topics aren’t really the kind that gets to me.
🙁