Hi, all.

I liked to ask the same question that I did at stackoverflow.com.

The question link is:
How to send output audio from another running app to my app, with Jack audio engine, for recording purpose, in Android OS device, programmatically
.

I am sorry because the question is for Android OS, but Android OS is linux kernel based, by wikipedia.

Wikipedia link:
https://en.wikipedia.org/wiki/Android_%28operating_system%29
.

Best regards,
Daniel S. F. Bruno