It's also obscure that you can make a CD with data in the right format,
https://www.discogs.com/search/?q=DTS-CD&type=all
and connect a CD player with a S/PDIF connector to almost any home theater and you have multichannel music. I have a big Sony 300 disc CD changer that is half full of 5.1 discs and I like how I can put together very ordinary hardware to get extraordinary sound.