Yes both adc / dac are working:
You can load a sample in a AudioSource, this will be the ADC signal You can make a patch with a DAC, this will be the AudioListener
Communication from Unity -> PD is working Communication from PD -> Unity is working
Loading externals are working too. But what I do is to compile the
external with libpd and call it in setup(). I have been using comport
for communication between a microcontroller and Unity:
https://www.youtube.com/watch?v=fVlGEmsO0Ps
Right now: Unity 3.5 / Unity 4 OSX (Unity PRO) Windows 32bit (can be run on 64bit)* Android
Coming eventually: iOS
*I have been able to use the indie/free version of Unity 3.5 on
Windows when placing the libpdcsharp.dll at the right place. Didn't
test with Unity 4. Since Unity4 you can build for Android even with
the indie version.
Not implemented, spatialisation when using a DAC. ADC / AudioSource is
handle by Unity (you need to toggle 3D sound).
à+