Podcast Channels lets you setup 'Category-Casting' -- a different podcast per category.
0.28 - Switched to using the copy of getID3 included in WP since v 3.6
0.26 - Add episode author and episode category options - including taking episode author from the ID3 tags. (Plus a number of other bug fixes and improvements.)
0.25 - Added initial Feedburner support
0.22 - Making it work with WP 2.7
0.21 - important bug fix (i am an idiot)
0.20 - Added duration and explicit metadata for audio items in the Media Library. And got the Title and Link data working too.
0.1 - Just starting out, something to get it working