I like the idea of Soundiiz format playlists, for both long term storage and the way they aren't tied to any specific platform. It should make moving them between services convenient too. Apple Music and Napster don't let non-paying users see their playlists, so if you ever start using either of those, you need to export to them another service first. I think it's better to just use Soundiiz format instead instead of shuffling them around.

That being said, I'm finding Soundiiz playlists to be a real pain and I just want to jump ship. Song detection is lacking, outright wrong. or produces an error 404 even if you have a direct song URL, you can't re-order anything manually, and there is no album art available to make searches easier. You can't even view more than ONE line of a playlist description unless you're in editing mode! What is the point of a description then!?

Are there any other platforms that also have an internal playlist format? TuneMyMusic does not count, it only imports and exports, no holding anything. I've been looking and I can't find anything. At this point I might as well just start making manual text files even though that's not a real solution.