<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> Hello Fons, hello Frank, thank you very much for help and the info. Now I got it to work! :) But only with a very special tweaking: I had to rename the folder "utils" to "utils2" and update the import to "utils2.kmeters" to get it to work. Really weird, maybe "utils" is used somewhere else on my system? @Fons: Could it be possible to add the installation info you gave me in the previous mail to the Readme of jacktools? I don't know it this was only on my system, but since I'm using LinuxMint (Ubuntu-based), this could be an interesting information for more people. Now it's time to dive into jacktools... great! All the best, Vince <div class="moz-cite-prefix">On 6/13/20 11:55 PM, Fons Adriaensen wrote: </div> <blockquote type="cite" cite="mid:20200613215526.ums7adiafgx5esa5@mail1.linuxaudio.cyso.net"> <pre class="moz-quote-pre" wrap="">On Sat, Jun 13, 2020 at 11:00:34PM +0200, vince wrote: </pre> <blockquote type="cite"> <pre class="moz-quote-pre" wrap="">So I copied libzita-convolver and libzita-jclient from /usr/local/lib64 to /usr/lib, but I still get the same error message. </pre> </blockquote> <pre class="moz-quote-pre" wrap="">You should definitely not do that. /usr/local/lib and /usr/local/lib64 are for libraries that you compile locally from source. /usr/lib and /usr/lib64 are for libraries installed by your distro's package manager. Putting anything else there will may confuse the package manager sooner or later when you do a system update. The problem is probably that your system is not configured to use libraries in /usr/local. To fix this (as root) 1. Move the libraries back to their original locations under /usr/local 2. Using any text editor, Create a file local.conf in the directory /etc/ld.so.conf.d The file should contain these two lines: /usr/local/lib /usr/local/lib64 3. Run the command ldconfig 4. Reboot There will be an update of jacktools very soon. Mostly bugfixes etc. but JackGainctl will change. The 'rate' parameter in set_gain is no longer supported. The rate is now fixed to 600 dB/s expect for mute /unmute which will always take 10 milliseconds. Ciao, </pre> </blockquote> </body> </html>