I'd like to be able to play my library of mp3s without opening the laptop, but when I think about using a phone or tablet with some kind of iTunes-like interface (Microsoft Access for music!) I get depressed.
There's gotta be a better way. Somewhere at the intersection of existing public curation a la Discogs (genre/style assignments, album lists), a hypothetical Wikipedia/Allmusic mashup, and a kind of conceptual theme library that overlays different viewpoints on music history and how artists relate to each other ... and ideally a visual experience to match. I've always thought that an ideal music player would actually transform the entire music player, and perhaps your surrounding environment, to match the music being played. A grotty punk club. A swank hotel bar. Coincidentally Apple's Vision Pro comes out this year.