Install this version:
emerge -a =kde-plasma/oxygen-sounds-6.6.4
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =kde-plasma/oxygen-sounds-6.6.4
Or alternatively:
emerge --autounmask-write -a =kde-plasma/oxygen-sounds-6.6.4
# Copyright 1999-2026 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 EAPI=8 KFMIN=6.22.0 QTMIN=6.10.1 inherit ecm plasma.kde.org DESCRIPTION="Oxygen sound theme for the Plasma desktop" HOMEPAGE="https://invent.kde.org/plasma/oxygen-sounds" LICENSE="GPL-2+" SLOT="6" KEYWORDS="~amd64 ~arm64 ~loong ~ppc64 ~riscv ~x86"