On Tue, April 18, 2017 2:20 am, Claus Lensbøl wrote: Meaning that the R-Pi has the audio hardware, i.e. R-Pi is master? That is a good reference, but you have not provided any detailed information of what you specifically did. There are many steps in that wiki page. What command did you use to start jack? What was the output of jackd when started? That should make it very easy to copy and paste the exact command line you used, and the output on the console from jackd. Without that information help is very difficult to provide. The alsa_out adapter is a resampler for adding an additional audio hardware device. Your main hardware output should be connected with the usual driver arguments. We would be able to tell right away if you had done that correctly if you had pasted your command and console output into your original email. Once you have jack started properly, you could scp an audio file to your r-pi and use a tool like jack_play (might not be the correct name, check your jack example clients) to verify that you can play audio through jack. Once you have that verified, then you can worry about getting the netjack setup working, but so far you have not provided any evidence one way or the other to show whether jackd is even running correctly at the point you try to use jack_load. -- Chris Caudle