diff --git a/media-sound/mpg123-base/Manifest b/media-sound/mpg123-base/Manifest
index e09da22c54d3f..2336c2ccd688f 100644
--- a/media-sound/mpg123-base/Manifest
+++ b/media-sound/mpg123-base/Manifest
@@ -1,3 +1,4 @@
 DIST mpg123-1.32.10.tar.bz2 1118315 BLAKE2B 14cae4880436870b3adae0e98bcf33c27308e01adffec622ffbed7a6f605cf7afe1ac5a742130c1282208ecae1f7c4a0e16d1664ee8c5dc8e2976999ea37fa39 SHA512 4df3e76cafe642b1df8befaff3d3530150c13446ca7f07b8d527af5b6522e4d2dedd025a3f095f23a51e2318d17e1395de6e55c70e3a90f80017ea0955fe8c1f
 DIST mpg123-1.33.0.tar.bz2 1120676 BLAKE2B 481151c35efa4c3756d21aefb3c3d1657b0e97cc2cb074b622413267f0005682495f303b9b5f93d3a1239e22fdd4fdeea475ddcdd263c4cffa91a2f079ed7161 SHA512 c2c6a3536f18334e310337dc2cc7d4af141c1f7fffb02fc079d645f46113581d457587c562cf353d39375d721af6716cb4db6a964ef83284e390b597744c52ea
 DIST mpg123-1.33.1.tar.bz2 1121415 BLAKE2B a77b959e36d0ce613e51a92a4a7a4e6e33aa021b9c6d590102b109634ae691aea43a391ae50740285bbf30a282f2dd7212bdaa5fe2d14195899ed0813e7ebb0c SHA512 2426281368d80ffdfa3411ae5f739463c69a241a7d0d03cc9def5cc614a772268ada7ebb4c9a18bdd9d047efc8c59427a4f8ed2ee76d78df178a9b271aaaacd1
+DIST mpg123-1.33.3.tar.bz2 1121537 BLAKE2B d4610c07d7f7c90ef5ddadf15b847705bfe780102bee94a0fee122d8bb4ede75f33682643df3105f3193e234ddffb97e8dc8540ea3f3b365830682c5c45a42a7 SHA512 509841e296dabf6039b5301e8160fcea37f13963d7bedf12082d2ce0d3bd14229fd906cb899eea2be9942fb994d9e1e4f00c757ca96f4ca7d5a14469cf13b91d
diff --git a/media-sound/mpg123-base/mpg123-base-1.33.3.ebuild b/media-sound/mpg123-base/mpg123-base-1.33.3.ebuild
new file mode 100644
index 0000000000000..0fd1a51231774
--- /dev/null
+++ b/media-sound/mpg123-base/mpg123-base-1.33.3.ebuild
@@ -0,0 +1,107 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+MY_PN="mpg123"
+MY_P="${MY_PN}-${PV}"
+inherit flag-o-matic toolchain-funcs libtool multilib-minimal
+
+DESCRIPTION="Realtime MPEG 1.0/2.0/2.5 audio player for layers 1, 2 and 3"
+HOMEPAGE="https://www.mpg123.org/"
+SRC_URI="https://downloads.sourceforge.net/${MY_PN}/${MY_P}.tar.bz2"
+S="${WORKDIR}/${MY_P}"
+
+LICENSE="GPL-2 LGPL-2.1"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos"
+IUSE="cpu_flags_x86_3dnow cpu_flags_x86_3dnowext cpu_flags_ppc_altivec alsa coreaudio int-quality ipv6 jack cpu_flags_x86_mmx nas oss portaudio pulseaudio sdl cpu_flags_x86_sse"
+
+# No MULTILIB_USEDEP here since we only build libmpg123 for non native ABIs.
+# Note: build system prefers libsdl2 > libsdl. We could in theory add both
+# but it's tricky when it comes to handling switching between them properly.
+# We'd need a USE flag for both sdl1 and sdl2 and to make them clash.
+RDEPEND="
+	!<media-sound/mpg123-1.32.3-r100
+	!media-libs/libmpg123
+	dev-libs/libltdl:0
+"
+DEPEND="${RDEPEND}"
+BDEPEND="
+	dev-build/libtool
+	virtual/pkgconfig
+"
+IDEPEND="app-eselect/eselect-mpg123"
+
+DOCS=( AUTHORS ChangeLog NEWS NEWS.libmpg123 README )
+
+src_prepare() {
+	default
+	elibtoolize # for Darwin bundles
+}
+
+multilib_src_configure() {
+	local _audio=
+	local _cpu=generic_fpu
+
+	# Build fails without -D_GNU_SOURCE like this:
+	# error: 'struct hostent' has no member named 'h_addr'
+	append-cflags -D_GNU_SOURCE
+
+	filter-lto # bug #951124
+
+	if multilib_is_native_abi ; then
+		local flag
+		for flag in coreaudio pulseaudio jack alsa oss sdl portaudio nas ; do
+			if use ${flag}; then
+				_audio+=" ${flag/pulseaudio/pulse}"
+			fi
+		done
+	fi
+
+	use cpu_flags_ppc_altivec && _cpu=altivec
+	if [[ $(tc-arch) == amd64 || ${ARCH} == x64-* ]]; then
+		use cpu_flags_x86_sse && _cpu=x86-64
+	elif use x86 && gcc-specs-pie ; then
+		# Don't use any mmx, 3dnow, sse and 3dnowext (bug #164504)
+		_cpu=generic_fpu
+	else
+		use cpu_flags_x86_mmx && _cpu=mmx
+		use cpu_flags_x86_3dnow && _cpu=3dnow
+		use cpu_flags_x86_sse && _cpu=x86
+		use cpu_flags_x86_3dnowext && _cpu=x86
+	fi
+
+	local myconf=(
+		--with-optimization=0
+		--with-audio=dummy
+		--with-default-audio="${_audio} dummy"
+		--with-cpu=${_cpu}
+		--enable-network
+		$(use_enable ipv6)
+		--enable-int-quality=$(usex int-quality)
+		$(multilib_native_enable programs)
+	)
+
+	multilib_is_native_abi || myconf+=( --disable-modules )
+
+	ECONF_SOURCE="${S}" econf "${myconf[@]}"
+
+	if ! multilib_is_native_abi ; then
+		sed -i -e 's:src doc:src/libmpg123:' Makefile || die
+	fi
+}
+
+multilib_src_install_all() {
+	einstalldocs
+	mv "${ED}"/usr/bin/mpg123{,-mpg123} || die
+	find "${ED}" -type f -name '*.la' -delete || die
+}
+
+pkg_postinst() {
+	eselect mpg123 update ifunset
+}
+
+pkg_postrm() {
+	eselect mpg123 update ifunset
+}