Different Audio Sinks

Hello Guys,

I am using your ToneBoard (v1) via I2S on the VIM3 Pro with Android 9 as a Headunit in my car.
Now I have the issue I don’t want to play the voice when navigation via the toneboard but stream it via bluetooth (or better via udp to anything I’ll choose).

Is is possible to separate the audio streams of navi and music?
If so, how?

Thanks in advance!