Currently using AudioTrack and AudioRecord to record and play simultaneously, it's working great on the same device (either headset mic + headset speakers or phone mic + phone speakers). However, what I'd like to do is record from a device and play from another, for instance recording from my bluetooth headset microphone and then having the output on the device built-in speakers (or another pair of headset/headphones).

I have been trying for a few days but I could not find anything. Hence I am asking, is it even possible?