http://c2ske4mrgriaedpj7iirzst33yt6gwomcisvwypsbx4tfk6ykrhhvkid.onion/blogs/2024-06-01.html
I could probably simplify the process even more in the future, but as of writing this, the process is: Find a song on Spotify, download it using spotdl, open the song on Strawberry, organize the file(s) to be structured in a directory tree (artist>album>songname) , then let Syncthing do its thing. Finally, the pros of listening to offline music in 2024 outweigh the negatives.