As per subject title and as you already know, there is recorded dummy conversation heard between time ATC gaps.
This is a long time heritage since FS8 era and continues still today with P3Dv5.
So, I wonder if you could do something to eliminate it, as it is annoying especially during long flights.
Of course I used FS ATC, why do you think I wrote EditVoicepack if I would not have used FS ATC?
There are many YouTube videos where full flights are done with FS ATC. Can you find one that includes this audio?
I just spend half an hour listening to various ones, and nothing – they sound the same way as ATC has always sounded to me. If this is a common problem, I would expect it to be easy to find it on YouTube videos – but maybe I am just unlucky, so please send me the name of the video and the timestamp if I missed something obvious.