Hi, Just a note that since gqrx v2.5 it is possible to select audio backend at build time using the LINUX_AUDIO_BACKEND cmake option.
-DLINUX_AUDIO_BACKEND=Pulseaudio -DLINUX_AUDIO_BACKEND=Gr-audio Gr-audio will by default use ALSA. It has not been thoroughly tested, but on OS X we already use gr-audio with a different backend. Alex
