Over at Doug’s AppleScripts for iTunes, “power correspondents” are posting updates to AppleScripts for functionality with iTunes 4 and iPod firmware 1.3
The popular iTunes Library Manager has been updated to make it compatible with iTunes 4. The download also contains an Updater utility for users of earlier versions of iTLM which will update your backed-up iTunes 3 Libraries so they can work with iTunes 4.
Import Selected iPod Tracks to iTunes has been updated to make it compatible with iTunes 4. And to allow transfer of m4a (AAC) files from the iPod to iTunes.