Everything is WIP, We will see when the release is :)
Better Unreleased is a easy to use selfhost music service/app
You can host your own backend to sync youre music across multiple deviceses using your self generated API Key or just use it locally with no backend at all.
The Application itself is in C# and the Backend in golang, if you selfhost you need to deploy the go backend and enter the api url and api key to use it in the application! If you dont do it it just locally hosts its own backend. If you switch from a local backend to a hosted backend you songs that you already uploaded get synced!