Finally caved and bought a new TV. Old was a 2013-era 720p 32” Sony. New one is “Smart” 43” 4K TCL. $500 from Costco
It will never be on the network. It’s a dumb panel for the Apple TV.
So far so good. ECE appears to work (power on/off, volume). Has a “basic” mode which disables GoogleTV. Can tell it to start on previous port. Headphone out for our Tivoli
And yes TCL had a security thing. But without wifi or Ethernet that’s not really an issue.
I have (lets say) 5 mp3/aacs I want to merge together, possibly change the speed (eg 105 or 110%) for one, with pitch shift, possibly add a loop of the track + the last 33% of the track (eg 2 verse+chorus, and I want to repeat the last V+C again)