I got tired of remembering to manually update the AACS KeyDB file all the time, let alone find a good website that had the most up to date version. Cue the AACS Updater, a SystemD-compatible AACS updater. It updates every user every Friday at 8PM.
There is a deb file for Debian-based systems, but there’s also an install script that you can also run if you’re on a non-Debian-based system.