Install this version:
emerge -a =media-sound/njconnect-1.6# Copyright 2022 Your Mom
# Distributed under the terms of the GNU General Public License v3
EAPI=8
DESCRIPTION=""
SRC_URI="https://downloads.sourceforge.net/${PN}/${P}.tar.xz"
HOMEPAGE="https://sourceforge.net/projects/njconnect/"
LICENSE="GPL-2"
SLOT="0"
KEYWORDS="amd64 ppc x86"
IUSE=""
DEPEND="sys-libs/ncurses
virtual/jack"
RDEPEND="${DEPEND}"