Since moving to Ubuntu I’ve been running iPodder to manage my podcasts. It’s now called Juice, I think, but there’s no Linux version available yet – however it’s only changed in name after a bit of a fuss with Apple’s lawyers. iPodder is what’s still available via for most distros. Only thing that’s missing is a way to sync to your media device which is something I’ve got roughly scripted including removing old files, but it’s not ideal. Hopefully I can figure out a way to automatically fire off my script when closing iPodder which will request my Archos AV500 to be connected and then copy across the new podcasts.