+ PKG_PATH=/nfs/packages/NetBSD/trunk/x86_64/All /usr/tools/sbin/pkg_add -K /usr/pkg/pkgdb digest-20220214 x11-links-1.35 meson-1.0.0 python310-3.10.9 mktools-20220614 pkgconf-1.9.4 cwrappers-20220403 checkperms-1.12 glew-2.2.0nb2 libvorbis-1.3.7 libogg-1.3.5nb1 libtheora-1.1.1nb2 SDL2-2.26.2 SDL2_ttf-2.20.1nb2 png-1.6.39 tcl-8.6.12nb4
libffi-3.4.4: registering info file /usr/pkg/info/libffi.info
pkg_add: package `python310-3.10.9' was already installed as dependency, now marked as installed manually
pkg_add: package `mktools-20220614' already recorded as installed
pkg_add: package `cwrappers-20220403' already recorded as installed
pkg_add: package `libogg-1.3.5nb1' was already installed as dependency, now marked as installed manually
fftw-3.3.10nb1: registering info file /usr/pkg/info/fftw3.info
libgpg-error-1.46: registering info file /usr/pkg/info/gpgrt.info
libgcrypt-1.10.1: registering info file /usr/pkg/info/gcrypt.info
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 `png-1.6.39' 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

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