+ PKG_PATH=/data/packages/NetBSD/trunk/x86_64/All /usr/tools/sbin/pkg_add -K /usr/pkg/pkgdb digest-20220214 x11-links-1.35nb1 asciidoc-10.2.0nb6 glib2-tools-2.78.1 mktools-20220614 gmake-4.4.1 pkgconf-2.0.3 cwrappers-20220403 checkperms-1.12 freetype2-2.13.2nb1 png-1.6.40 harfbuzz-8.3.0 mpg123-1.32.3 libvorbis-1.3.7 opusfile-0.12nb2 libsndfile-1.2.2 speexdsp-1.2.1 fluidsynth-2.3.4 libxmp-4.5.0 SDL2_mixer-2.0.4nb13 SDL2-2.28.5 liblcf-0.7.0nb4 fmtlib-10.2.1
xmlcatmgr-2.2nb1: copying /usr/pkg/share/examples/xmlcatmgr/catalog.etc.sgml to /usr/pkg/etc/sgml/catalog
xmlcatmgr-2.2nb1: copying /usr/pkg/share/examples/xmlcatmgr/catalog.etc.xml to /usr/pkg/etc/xml/catalog
xmlcatmgr-2.2nb1: copying /usr/pkg/share/examples/xmlcatmgr/catalog.share.sgml to /usr/pkg/share/sgml/catalog
xmlcatmgr-2.2nb1: copying /usr/pkg/share/examples/xmlcatmgr/catalog.share.xml to /usr/pkg/share/xml/catalog
pkg_add: package `mktools-20220614' already recorded as installed
pkg_add: package `cwrappers-20220403' already recorded as installed
pkg_add: package `png-1.6.40' was already installed as dependency, now marked as installed manually
No schema files found: doing nothing.
pkg_add: package `SDL2-2.28.5' was already installed as dependency, now marked as installed manually
===========================================================================
$NetBSD: MESSAGE.NetBSD,v 1.3 2021/09/08 19:19:19 nia Exp $

To start JACK on NetBSD:

$ jackd -Sr -d sun

If you have an external USB mic:

$ jackd -Sr -d sun -P /dev/audio -C /dev/audio1 -i 1

===========================================================================