I proofread and checked into GIT with only a minor change or 2. Wanted to get this in for the builds tomorrow. Thanks to all.
I just saw question on libav-user list about virtual audio source. I thought pan filter from ffmpeg can do this, but at least in ffmpeg 5.1 it lacks runtime parameters tweaking, so your audio source can't travel from one side to another as track plays. I thought may be our key frames can do this? Anyone with two speakers to test? ( I have one, shame on me)
I'll fwd full letter.