FINALLY i made it work under #Rocky #Linux 9 ! Using #SWH's audio plugins ( #LV2 and/or #LADSPA ) under #PipeWire to "smooth out" audio loudness in a "set and forget" way. For #Rocky9 / #Rhel9 / #OL9 see my solution at https://awerner.myhome-server.de/doku.php?id=it-artikel:linux:how-to-enable-audio-normalization-a.k.a.-audio-compression-a.k.a.-audio-dynamic-range-compression-under-pipewire-using-ladspa-swh-plugins-rocky9 . For #Debian based Systems use https://awerner.myhome-server.de/doku.php?id=it-artikel:linux:how-to-enable-audio-normalization-a.k.a.-audio-compression-a.k.a.-audio-dynamic-range-compression-under-pipewire-using-lv2-swh-plugins-debian