The symptom I see is that when PULSEAUDIO=off, qTox fails to play audio. See bug#214393 I also, like this user, observe the problem. With PULSEAUDIO=off (which is a default), it shows devices in this format "pcm2:play:dsp2", but they don't work. With PULSEAUDIO=on, it shows devices in the format /dev/dspN, and they work. Please fix PULSEAUDIO=off. Thanks!
I also sent the message to the OpenAL ML about the problem: http://openal.org/pipermail/openal/2016-November/thread.html
Actually, the bug was in qTox: https://github.com/qTox/qTox/issues/3904 Closing...