[westurner]

I am fairly certain that the academic open source community had already published prior art for delay correction and volume control of speaker groups (which are obvious problems when you add multiple speakers to a system with transmission delay). IIRC there was a microsoft research blog post with a list of open source references for distributed audio from prior to 2006 for certain. (Which further invalidates the patent claims in question).

Before they locked Chromecast protocol down, it was easy to push audio from a linux pulseaudio sound server to Chromecast device(s).

The patchbay interface in soundsync looks neat. Also patch bay interfaces: BespokeSynth, HoustonPatchBay, RaySession, patchance, org.pipewire.helvum (GTK), easyeffects (GTK4 + GStreamer), https://github.com/BespokeSynth/BespokeSynth/issues/1614#iss...

pipewire handles audio and video streams. soundsync with video would be cool too.

FWIU Matter Casting is an open protocol which device vendors could implement.