spotbye/spotiflac ? reverse-engineered prompt

Build me a simple desktop app that lets me paste a Spotify track, album, or playlist link and download the songs in true FLAC when available. It should work on Windows, Mac, and Linux, feel clean and easy to use, and not require me to sign in to Spotify or any other service.

I want the app to fetch the best matching audio from services like Tidal, Qobuz, or Amazon Music, then pull in the track info and metadata so the files are named properly and come out organized. It would be great if it also shows basic progress, handles errors nicely, and makes it obvious when a download is finished.

If you need to check current docs or a library detail, look it up online. Please make the app polished enough that it could be released as a real desktop tool.