I started https://features.jellyfin.org/posts/3557/describe-blue-orange-playback-progress-bars-in-dashboard

not self-hosted

If I’m understanding the OP’s use case, Syncthing is a poor choice for this. It’s great for power-user secure syncing, but not for casual sharing.

this link is broken? I had to copy+paste it

You can let Ethan know about that: https://selfh.st/contact/ , I’m sure he’d appreciate it