Hello Isaac,
For unrelated reasons I did a clean install of PlayIt Live version 1.15.2.1444 on a newly installed Widows 7 machine and the audio stopped after a couple of minutes.
I thought it was the sound card driver but, in desperation, I installed the new beta version 1.16.1.1582 - 27 April 2017 and that SEEMS to have fixed the problem.
You might find that is worth a try.
Isaac Mulcrone