Oh it is certainly not just you, I am sometimes confused reading them even for commands I have used for years and I know what flag I am looking for but don’t remember the exact syntax or something hah! I am glad they are there but they are definitely not a complete guide to any command, especially built-ins.

Interestingly, this is something AI has been very useful for to me, less searching because I can describe the outcome I want and it figures out what I am talking about generally.

Have you tried adding 239.255.255.250/32 to your outbound subnets variable? This is the multicast address for SSDP which mDNS ultimately relies on if I remember right, I recall having to do this for Plex in the past.

This is a cool idea! This sounds a lot like what DANTE and AES67 or AVB are used for in pro audio (mixing console sends multichannel and outputs can subscribe to one or more channels), maybe they have some ideas on timing sync which I think would be the hardest part as others have said, it is crazy how small of a jitter your brain can hear.

I remember your first post a year or so ago and dang you have been busy, it looks really great. I will definitely be installing this at home to organize product manuals and such.