openSUSE:Leap:15.1 openSUSE Leap 15.1 https://download.opensuse.org/distribution/leap/15.1/repo/oss/ jack-rack LADSPA Effects Rack for JACK JACK Rack is a stereo LADSPA effects rack for the JACK audio API. You can insert LADSPA effects through JACK Rack. It uses GTK+ 2 for the GUI.