The sound disappears


I’m using a Calyx DAC 24/192 and it’s connected with usb from my Mac mini 2012
Using the latest version of Audirvāna

But half way through a song the audio disappears but the song plays on on the computer.

I need to press STOP on the Audirvāna program and restart the track for the music to come back

It don’t seem that the Mac mini looses connection with the calyx dac

Anyone with an idea ?