Hi Oxo - Thanks for the show. 

One question - Doesn't rsync only copy the files which have changed in the source or destination directory? In other words, you wouldn't need the "find ..." part of the command. Or did you only want to transfer new changes, and older changes are not to be transferred across? 
I use rsync for keeping my server music up to date. I have a local copy of my music (ripped from CDs I actually own!!), and have an instance of Jellyfin running on a server. I mount the server music directory on my local machine, and run:

rsync -avt --delete /var/lib/mpd/music/ /mnt/music/

This copies files from my local directory into the mounted folder, and deletes any files in the latter which are not in the former. If I understand your show, you are working to achieve the same thing - have a master copy on one machine, and update the directories on other machines.
I like the -print0 option - I haven't seen that before, and it looks useful.

I look forward to your next episode!