For the enjoyment of music I have seen the death or dying of the 8 track (though I think my dad may still have his in storage), LP's and albums of all kinds (to those younger than I, these are called records), cassette tapes and players like the Walkman, and even CD's are slowly fading into history.
All of these have given way to the birth of MP3 players (I have the Sony Walkman). Scared to think what is coming next. (Microchips embedded in us so we can just channel what we want to hear??)