There's no need for CD, cassette or MiniDisc. These days you can store ALL your music in CD-quality audio on a single solid-state memory card. People clamoring

There's no need for CD, cassette or MiniDisc. These days you can store ALL your music in CD-quality audio on a single solid-state memory card. People clamoring for cassette and CD are a tiny minority. Most listen on their PC or smartphone.