If you're using Navidrome or similar to stream your music then check out beets-alternatives [0]. It lets you sync (and optionally convert) your library or a subset of it to another location, in my case my music storage mounted with Rclone. It's especially useful if you need to have a different naming structure in your target directory for whatever reason. I like to keep each disc of a multi-disc album in in its own subdirectory but most streaming servers seem to prefer all tracks of an album to be in the same directory. With Beets-alternatives I can have a different naming structure for each collection vs. having to rename my primary collection to suit whatever streaming server I happen to be using.

[0]: https://github.com/geigerzaehler/beets-alternatives