So I managed to install pulseaudio 4.0 including sbc, speex, bluez and d-bus and I encounter the same problem. I installed D-feet to monitor dbus. This didn't really help move things forward as there's only listed what I already know from the python example. Play is not working here aswell as it's based on python again. Geez, I've been trying to make this work for about 2 weeks or more. Just to speak into my headset's microphone and to record it with linux. It worked exactly zero times. I ran out clocks, no solution in sight so far. Sigh.
