First, thank you for replying. I have not messed with the volume because the promos of progress as the system reads it are loud. I can try to play with that though. Also, I have only taken the OST zip file directly to the USB and then placed the USB on the pinsound board and let it start reading it. It told me 100% complete but then said checking audio files and then didn’t nothing for several hours. I tried to play but no sound. Does it need both files?