Melue v0.8.0

Spotify playlists in Melue, and your music folders followed as they change.

• Spotify playlists (Playlists: Add from Spotify): paste a public playlist's link, no sign-in or Premium needed. Its
  songs are matched to the ones you have; the others show greyed, and their list can be copied. It follows the
  playlist on Spotify by itself, with Spotify's own picture as its cover (or its songs' covers, if you like).
• A playlist with more than 100 songs gets its full list from a CSV (Update list: the link is copied and the exporter
  opens; on a computer Melue picks the download up by itself). A "!" says when it changed on Spotify since.
• Spotify playlists sync to your other devices like your own playlists, with your changes (songs removed show greyed,
  with Restore). Stop following Spotify keeps it as your own playlist, on every device.
• Keep only on this device asks what happens on your other devices: keep their copy, or delete it from them (syncing
  it again brings it back).
• On a computer, Melue watches your music folders: a song added, changed or removed shows up by itself, and fills in
  a playlist's greyed song.
• Songs added to or removed from a playlist on another device unfold and fold away in place.
• Toasts can be tapped: "Added to …" opens the playlist with the song pointed out, a song added to the queue opens Up
  next, and others open where they're about. On a phone, toasts show on Now playing too.