If you want this experience but don't want Spotify may I suggest my "amp" app - you can get it on tinyjs.app

It's small ~10mb. Yes, takes a bit more memory, but it plays all your local files including rarer things like FLAC + Cue, midi and all the tracker files you could want!

And includes a bunch of viz - and you can write your own too.

It doesn't do Winamp skins; decided I wanted to add more than they could support.