I’m evolving a “music player” system which basically consists of a fleet of individual players, each with a full copy of the music library because, even at today’s storage prices, why not? Storage for 10,000 songs at higher fidelity than a brand new LP vinyl album costs less (adjusted for inflation) than an album of 8 songs did back in the 1980s, and only 2 of those 8 songs were usually any good… So, have a music player in every bedroom, living room, family room, kitchen, car, patio - turn them on when you want, synchronize them when you want - split off and listen to your own playlist when you want - and every player contains a synchronized backup of all the music so you can just drive off with one, go completely off-grid and never interrupt the playlist. The only network traffic is from your phone interface to choose your playlist or synchronize with players nearby - or across the planet.