Looking for business podcasts? Check out iBizRadio at http://www.iBizRadio.com , a directory of business-oriented podcasts.
The site is a searchable subject index with categories ranging from accounting to travel and hospitality. Not all categories have listings — actually this directory looks a bit sparsely populated. Category pages have listings with brief descriptions and “last updated” notes so you can see when the podcast has updated. (Unfortunately not all podcasts include date information so not all podcasts have “last updated” flags.)
Each podcast has its own page with a list of recent episode that you can download directly. There’s also an Flash-based player on the page for each episode so you can listen if you’d rather not download.
I’m really surprised there’s not more here, but it’s a nice idea.