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 4m 51s ago
Title Cap various track tags, featuring editable exceptions lists
downloaded 5m 52s ago
Create "Add to Playlist" droplet by selecting a playlist
downloaded 15m 1s ago
Droplet adds files dragged on it to a preferences-set playlist
downloaded 29m 28s ago
Recreate a playlist such that its visible columns mirror the Music library
downloaded 30m 15s ago
Export selected tracks' data to XML file, import later
downloaded 1h 21m 30s ago
Compel a selected Smart Playlist to dynamically refresh by removing all its tracks