The Operating System version (9.4) does not match 9.3
To force installation of this package, add CHECK_OSABI=no to pkg_install.conf
pkg_add: osabi-NetBSD-9.3: install script returned error status
pkg_add: Can't install dependency osabi-NetBSD-9.3
pkg_add: x11-links-1.37: expected dependency osabi-NetBSD-9.3 still missing
pkg_add: 1 package addition failed
===========================================================================
$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

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