I agree with you hypothetically. But my question was about their real world issues. They could, in theory, have ids for songs-in-playlists. But they don't in f

I agree with you hypothetically. But my question was about their real world issues. They could, in theory, have ids for songs-in-playlists. But they don't in fact have them and their RPC api doesn't require them. That's what I'm interested in. Not how they could change their architecture to make REST work.