Looks for your local music files on Spotify and helps you create a playlist. This is useful for migrating your local music to Spotify. **Your tracks need to have valid metadata (artist and title is the minimum)!**.
Feel free to use `https://lunasqu.ee/callback` as a callback url or put `callback.html` on your own server. It just prints query parameters to html. even if i wanted to i couldn't steal your code as i do not know your client secret.