diff --git a/media-libs/sdl3-mixer/Manifest b/media-libs/sdl3-mixer/Manifest
new file mode 100644
index 0000000000000..8fc201ca3024f
--- /dev/null
+++ b/media-libs/sdl3-mixer/Manifest
@@ -0,0 +1 @@
+DIST sdl3-mixer-3.0.0_pre20250404.tar.gz 3372186 BLAKE2B d874679a7b5a04c510b94564344d5d409f72ad24869a9c1e5789f4c33ee6e3518711b7c4ea299ee2c05cc4e832ea81042afd58db1113406a724e933f76fc7571 SHA512 077c32783540a0b430a84d2320322b136e9c327aca2af4f0588459c404e1814a064a6a448868fefb6d300575581e2546a24ed3eb917f9a6af93a7176642ea870
diff --git a/media-libs/sdl3-mixer/metadata.xml b/media-libs/sdl3-mixer/metadata.xml
new file mode 100644
index 0000000000000..95e31c9356760
--- /dev/null
+++ b/media-libs/sdl3-mixer/metadata.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>games@gentoo.org</email>
+		<name>Gentoo Games Project</name>
+	</maintainer>
+	<maintainer type="person">
+		<email>kangie@gentoo.org</email>
+		<name>Matt Jolly</name>
+	</maintainer>
+	<longdescription>
+		A simple multi-channel audio mixer that supports 8 channels of 16 bit stereo audio, plus a single channel of music.
+		It can load FLAC, MP3, Ogg, VOC, and WAV format audio.
+		It can also load MIDI, MOD, and Opus audio, depending on build options.
+		It is a part of the SDL project, and is used by many games and applications.
+	</longdescription>
+	<use>
+		<flag name="drlibs">Use vendored dr_{flac,mp3} instead of <pkg>media-libs/flac</pkg> and/or <pkg>media-sound/mpg123-base</pkg> for those formats</flag>
+		<flag name="fluidsynth">Use <pkg>media-sound/fluidsynth</pkg> for MIDI support</flag>
+		<flag name="gme">Support additional music formats with <pkg>media-libs/game-music-emu</pkg></flag>
+		<flag name="midi">Basic support for MIDI files</flag>
+		<flag name="mod">Basic support for MOD files</flag>
+		<flag name="modplug">Support MOD via <pkg>media-libs/libmodplug</pkg></flag>
+		<flag name="playtools">Install playwave and playmus tools (useful for testing)</flag>
+		<flag name="stb">Use <pkg>dev-libs/stb</pkg> instead of <pkg>media-libs/libvorbis</pkg> for OGG Vorbis support</flag>
+		<flag name="tremor">Use <pkg>media-libs/tremor</pkg> instead of <pkg>media-libs/libvorbis</pkg> for OGG Vorbis support</flag>
+		<flag name="wav">Support WAVE files</flag>
+		<flag name="wavpack">Support WavPack files</flag>
+		<flag name="xmp">Support MOD via <pkg>media-libs/libxmp</pkg></flag>
+	</use>
+	<upstream>
+		<remote-id type="github">libsdl-org/SDL_mixer</remote-id>
+	</upstream>
+</pkgmetadata>
diff --git a/media-libs/sdl3-mixer/sdl3-mixer-3.0.0_pre20250404.ebuild b/media-libs/sdl3-mixer/sdl3-mixer-3.0.0_pre20250404.ebuild
new file mode 100644
index 0000000000000..caf79673dd40f
--- /dev/null
+++ b/media-libs/sdl3-mixer/sdl3-mixer-3.0.0_pre20250404.ebuild
@@ -0,0 +1,108 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+MY_COMMIT=68764f35899e133b402336843c046d75136eaf08
+inherit cmake-multilib
+
+DESCRIPTION="Simple Direct Media Layer Mixer Library"
+HOMEPAGE="https://github.com/libsdl-org/SDL_mixer"
+SRC_URI="https://codeload.github.com/libsdl-org/SDL_mixer/tar.gz/${MY_COMMIT} -> ${P}.tar.gz"
+
+S="${WORKDIR}/SDL_mixer-${MY_COMMIT}"
+
+LICENSE="ZLIB"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="drlibs flac fluidsynth gme midi mod modplug mp3 opus playtools"
+IUSE+=" sndfile stb timidity tremor vorbis +wav wavpack xmp"
+REQUIRED_USE="
+	drlibs? ( || ( flac mp3 ) )
+	midi? ( || ( timidity fluidsynth ) )
+	timidity? ( midi )
+	fluidsynth? ( midi )
+
+	vorbis? ( ?? ( stb tremor ) )
+	stb? ( vorbis )
+	tremor? ( vorbis )
+"
+
+RDEPEND="
+	media-libs/libsdl3[${MULTILIB_USEDEP}]
+	!drlibs? (
+		flac? ( media-libs/flac:=[${MULTILIB_USEDEP}] )
+		mp3? ( media-sound/mpg123-base[${MULTILIB_USEDEP}] )
+	)
+	gme? ( media-libs/game-music-emu[${MULTILIB_USEDEP}] )
+	midi? (
+		fluidsynth? ( media-sound/fluidsynth:=[${MULTILIB_USEDEP}] )
+		timidity? ( media-sound/timidity++ )
+	)
+	mod? ( media-libs/libxmp[${MULTILIB_USEDEP}] )
+
+	opus? ( media-libs/opusfile[${MULTILIB_USEDEP}] )
+	vorbis? (
+		tremor? ( media-libs/tremor[${MULTILIB_USEDEP}] )
+		!stb? ( !tremor? ( media-libs/libvorbis[${MULTILIB_USEDEP}] ) )
+	)
+	gme? ( media-libs/game-music-emu[${MULTILIB_USEDEP}] )
+	wavpack? ( media-sound/wavpack[${MULTILIB_USEDEP}] )
+"
+DEPEND="${RDEPEND}"
+
+multilib_src_configure() {
+	local mycmakeargs=(
+		-DSDLMIXER_DEPS_SHARED=no # aka, no dlopen() (bug #950965)
+		-DSDLMIXER_FLAC=$(usex flac)
+		-DSDLMIXER_FLAC_LIBFLAC=$(usex flac $(usex drlibs no yes) no)
+		-DSDLMIXER_FLAC_DRFLAC=$(usex drlibs)
+		-DSDLMIXER_GME=$(usex gme)
+		-DSDLMIXER_GME_SHARED=no
+		-DSDLMIXER_INSTALL_MAN=yes
+		-DSDLMIXER_MIDI=$(usex midi)
+		-DSDLMIXER_MIDI_FLUIDSYNTH=$(usex fluidsynth)
+		-DSDLMIXER_MIDI_FLUIDSYNTH_SHARED=no
+		-DSDLMIXER_MIDI_TIMIDITY=$(usex timidity)
+		-DSDLMIXER_MOD=$(usex mod)
+		-DSDLMIXER_MOD_XMP=$(usex mod)
+		-DSDLMIXER_MOD_XMP_LITE=no
+		-DSDLMIXER_MOD_XMP_SHARED=no
+		-DSDLMIXER_MP3=$(usex mp3)
+		-DSDLMIXER_MP3_DRMP3=$(usex drlibs)
+		-DSDLMIXER_MP3_MPG123=$(usex mp3 $(usex drlibs no yes) no)
+		-DSDLMIXER_OPUS=$(usex opus)
+		-DSDLMIXER_OPUS_SHARED=no
+		-DSDLMIXER_SAMPLES=$(usex playtools)
+		-DSDLMIXER_SAMPLES_INSTALL=$(usex playtools)
+		-DSDLMIXER_SNDFILE=$(usex sndfile)
+		-DSDLMIXER_SNDFILE_SHARED=no
+		-DSDLMIXER_STRICT=yes # Fail when a dependency could not be found
+		-DSDLMIXER_VENDORED=no # Use vendored third-party libraries
+		-DSDLMIXER_VORBIS=$(usex vorbis $(usex stb STB $(usex tremor TREMOR VORBISFILE) ) no )
+		-DSDLMIXER_WAVE=$(usex wav)
+		-DSDLMIXER_WAVPACK=$(usex wavpack)
+		-DSDLMIXER_WAVPACK_DSD=$(usex wavpack) # seems to be default-enabled in wavpack
+	)
+
+	cmake_src_configure
+}
+
+multilib_src_install_all() {
+	dodoc {CHANGES,README}.txt
+	rm -r "${ED}"/usr/share/licenses || die
+}
+
+pkg_postinst() {
+	# bug #412035
+	if use midi && use fluidsynth; then
+		ewarn "FluidSynth support requires you to set the SDL_SOUNDFONTS"
+		ewarn "environment variable to the location of a SoundFont file"
+		ewarn "unless the game or application happens to do this for you."
+		if use timidity; then
+			ewarn "Failing to do so will result in Timidity being used instead."
+		else
+			ewarn "Failing to do so will result in silence."
+		fi
+	fi
+}