Thanks again for the feedback! There is one other thing that has cropped up with Audirvana that I've never before experienced...
My shelf audio system at home (Marantz M-CR603 with Dali Zensor 1's) is AirPlay capable and I have often played music via AirPlay from iTunes. But I usually prefer to use the optical connection from the headphone jack to the unit, and it sounds very nice.
Yesterday my wife's laptop was hooked up to the M-CR603 by optical, while I was using my laptop across the room, Audirvana was open but not playing. When I received my next error beep from my MBP for something it went through the stereo via AirPlay and it was LOUD! My whole family literally jumped out of our chairs. I realize that volume control via AirPlay can sometimes be iffy, but if I'm purposely sending something via AirPlay then I know that I need to adjust the volume in advance.
The first strange thing is that AirPlay was activated, even though I never activated it. I never told anything to play anything through AirPlay, it just decided to switch over, for some reason. I'll switch it back to the regular output, and it will be OK for about 10-ish minutes, but then the music stops as my laptop again switches the Marantz over to AirPlay.
The second strange thing is that my system audio was playing through AirPlay. This is supposed to be impossible, since I tried to do it before on purpose, but couldn't find a way to turn it one…I concluded that Apple only wants you to be able to use AirPlay from iTunes (otherwise nobody would buy AppleTV, right?). But somehow, it did play system sounds from AirPlay, a first in my experience. Also, if I'm playing a song through the standard output optical connection, the music will go silent even as th player indicates it is still playing…I ONLY receive system audio, but no music.
It keeps happening from time to time when I'm at home, but is growing quite annoying. I was curious to know if Audirvana had anything to do with it, so I quit Audirvana…and indeed it stopped swtiching to AirPlay. I've tried it several times now, and every time the problem goes away when I quit Audirvana.
So…there is some kind of bug with Audirvana and AirPlay…does anyone know how to fix it?