> They've solved so many problems in the music-listening experience, it's amazing

And yet each of your comment’s 4 current replies describes a different “only” problem with Spotify that’s solved with folders of mp3s ;)

(Disclaimer: I listen to very little music, so I have no horse in this race except for loathing DRM, and I’m only guessing that the “missing quite a few major artists” problem is solvable by torrenting)