Solved? Streaming high quality audio
The problem with the very popular Zoom and Skype platforms is that they are designed for speech rather than music. They compress and filter the sound in order to make efficient use of bandwidth.
I've been interested in how you can stream high quality audio, and have discovered a plug that offers it. The ListenTo plugin from Audiomovers allows those with DAWs such as Logic Audio to output their audio in PCM (lossless) audio with very little latency.
I'm testing it now but it looks very interesting!