I use ratings in iTunes, mostly for smart playlists, and am a bit worried they will be going away in favor of the binary “Loved” introduced with iTunes 12. To that end, I have built a simple AppleScript to quickly love all songs with 5 stars in the current playlist and thought others might also find it useful.
You can download the script here. Enjoy!
Note: This script requires Yosemite since it uses JavaScript for Automation.