Dear God. The point was that your music can follow you and jump from home speaker system to earphones to car speakers to office speakers without you touching or doing anything.
You seem to have hit the age where you need to be crotchety and bitch several hours per day lest you break a hip next time you shower. I can commiserate, but thankfully I only need to bitch two hours per day to stay safe so far. Good luck with your complaining, hope it goes well.