thanks for looking at this. I’ve tried the name change but no difference.
I do have a potential workaround by turning them in to mp3s but I’d obviuosly rather be able to play the wav.
I have also noticed that alot of these (but not all) seem to be files recorded in a particular piece of software (Stenberg Wavelab). they are also relatively long. I don’t know if that is significant although worth noting they played in the previous version of Roon no problem.