lowrider, I don't know if you're making a wrong assumption about how ignorant I am about all this or a correct assumption about how gullible I am because I cannot find a setting for Optical Digital Out Port on my MacBook Pro (10 years old) or the old iMac (12 years old). But you did make me look. ;-)
I have not check the new iMac yet.
I have not check the new iMac yet.