gPodder is great!
I just started using gPoddder this week, although I installed it a while ago. It is exactly what I've been looking for to keep track of netcasts. If you use Ubuntu or gNewSense gPodder is in the repositories (search for gPodder) or you can Download gPodder 2.1 from the Ubuntu gPodder PPA. It is distributed under the GPLv3 or later and ready for installation on 10 operating systems. You can use it to synchronize with most portable digital media players.
You can import my netcast feed list in OPML format by copying the link address and pasting it into gPodder.