I have just installed linphone 3.3.2 There is a "PulseAudio: default" choice in the device list. I didn't test it, since the daemon is not installed on my system (libpulse0 is). Maybe the package could recommend or suggest pulseaudio, to get the same functionnality? dmix is of little use nowadays, since alsa can handle several streams on a single device IIRC.
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