FOSS only applies to code, you can't change the source of art. It's art, you can either own it or just enjoy it (like when you go to museums). You can't actually change it to the way you like it. You'd have to have and own the DAW's working mastered project files to make it FOSS compatible. No one does that.
And you aren't gonna carry around a Sony Discman while working out at the gym are you💀
Don't mind me here with my walkman and casettes.
But yes the lack of cassette decks and compact disc players in the wild has reached new heights unfortunately, hell they're getting rid of AUX ports now, the absolute fucking cunts they are! My laptops don't even have disk drives anymore, I had to get an external one.