Solved
Suddenly cutscenes have no sound.
Everything was working fine for weeks, then suddenly in cutscenes, the sound apparently stopped working.**
All other sound continues to work, and I still hear the background audio going on during ...
Of all the stupid things it is a hardware issue - if i fiddle with the headphone connection it will come back on - for a bit, strange that it was only cutting out for cutsceen audio, but I am guessing it was only recorded to left ot right and my headphones were only playing the other side.
