Sorry - but I concur with John_B. I was running the the latest build and the HDMI (ALSA) outputs were showing on my NUC based Rock, but I could not get any sound to manifest itself on my Arcam AVR20. I followed this link (Roon ROCK UEFI Intel NUC not showing HDMI output - #3 by Jinwei_Hao) hoping that it would fix the problem but now the HDMI outputs are not even listed in the Audio section; a retrograde outcome. I was hoping to play some my multichannel material (got PF Animals for Christmas), but no such luck. Is there a version that will work, even if it means downgrading to 1.8?