I'm back on this project after a break but not making much progress. I'm trying to get the sound from the input hardware on one Linux box to play on the output hardware of a second Linux box on the same network. I'm using Jack1, version 0.124.1 on both boxes. On the Slave (input), I run jackd -d net On the master (output), I run Jackd -d alsa and then (in another terminal) jack_netsource -H 10.26.7.90 where 10.26.7.90 is the IP address of the slave device. .but the two devices don't seem to connect. When I start jack_netsource on the master, the slave briefly sees some activity and puts up netxruns amount: 21ms resync after freerun. 5 netxruns amount: 2133ms netxruns amount: 21ms master seems gone. entering freerun mode and jack_netsource returns Not connected If I can get the two ends connected, I'm hoping I can use alsa_in and/or alsa_out to achieve the end to end audio but, again, I don't know exactly how to make this work. Any help would be great. - David From: Paul Davis [mailto:paul@linuxaudiosystems.com] Sent: 24 February 2014 17:58 To: David J Myers Cc: Adrian Knoth; linux-audio-dev(a)lists.linuxaudio.org Subject: Re: [LAD] NetJack question On Mon, Feb 24, 2014 at 12:48 PM, David J Myers <david.myers(a)amg-panogenics.com> wrote: 0.121.2 is the version I got from ubuntu with apt-get install. I removed that version and downloaded and built 0.124.1, however when I now try to run jackd -d alsa I get back jackd: unknown driver 'alsa' What's going on? Your system is missing the development version of the ALSA library. So JACK was built without ALSA support. What version of Ubuntu are you using? I am unable to believe that 0.121 is the latest version available for any reasonably recent version of that distro. --p