Upon opening, Audirvana will ask for your license or start a free trial. It will also ask permission to access your local folders—point it to your music directory (e.g., D:\Music\FLAC ).
Buffer underruns. The CPU can't feed the DAC fast enough. Fix: In Audirvana Settings -> Audio System -> Buffer Size. Increase it from 512 samples to 2048 or 4096. audirvana windows