Obligatory warning: This script has been designated as an obsoleted "Retro Script". There is no guarantee that it will function as described with modern versions of iTunes and/or macOS. If used in its current form it may not work at all without modification and, at worst, it may corrupt or destroy data.
iTunes will stop updating a podcast if you have not listened to at least one of its episodes in five days. This script will batch-update every podcast subscription so you don't have to manually update each one individually.
I have posted instructions on how to create a launchd agent to run this script automatically and invisibly in the background to ensure that your Podcasts are always updated.
Possible iTunes bug (July 17, 2014): Looks like the iTunes AppleScript command updatePodcast command is broken as of iTunes 11.
downloaded 6s ago
Display, create text file listing info of dead tracks
downloaded 27s ago
Check scripts downloaded to your computer from dougscripts.com for latest version
downloaded 1m 43s ago
Locates pairs of track entries pointing to the same file
downloaded 3m 12s ago
Detects if a track's file's metadata contain image information
downloaded 4m 3s ago
Display and export playlists' name, size, time, track count, love/dislike for selected source
downloaded 6m 40s ago
Convert selected tracks and replace them with converted versions