you can sync a machine to sub millisecond precision easily over WiFi
which
is probably OK for home theater.

Maybe, but at 20kHz being out by just 25 *micro* seconds is 180degrees out
of phase, the same as reversing the polarity for wired speakers.

How much this matters with all the little nodes from 4 speakers in play
I'm not sure.

--
Jim H jh
@333
.org