Original Daytona USA audio — SEGA, 1994

Engine samples, sound effects, announcer speech and music from the user-supplied Japan Revision A ROM set. Requested by the project owner on September 14, 2026. These recordings are original SEGA game audio, not CC0 or project-original works.

Music and speech rendered through the original sound program using MAME 0.289; 48 kHz Ogg Opus encoding with ffmpeg/libopus. Runtime pitch, event selection and volume mixing are implemented by this project. MAME source references: https://github.com/mamedev/mame/blob/mame0289/src/mame/shared/segam1audio.cpp and https://github.com/mamedev/mame/blob/mame0289/src/devices/sound/multipcm.cpp

See manifest.json for exact ROM and capture hashes, sound-test selections, trims and encoded hashes. Rebuild: scripts/record-rom-audio.py and scripts/build_rom_audio.py. Raw ROMs and intermediate WAVs remain local and are not packaged.

Duke Nukem 3D voice line — original game audio, 1996

The requested bubblegum line is CHEW05.VOC from the user's DUKE3D.grp. Extracted and converted directly to mono 48 kHz Ogg Opus with ffmpeg/libopus; no trim or gain change. This is original Duke Nukem 3D audio, not CC0 or project-original audio. See scripts/duke-audio-source.json for source/member/output hashes and scripts/build_duke_audio.py to rebuild. The GRP and raw VOC are not public assets. Activated by the DUKE garage easter egg.

Duke Nukem 3D theme — Grabbag, composed by Lee Jackson

GRABBAG.MID from the user's DUKE3D.grp, rendered through TinySoundFont/TinyMidiLoader using GeneralUser GS v2.0.3 by S. Christian Collins, then encoded to stereo 48 kHz Ogg Opus. This is a new rendering of the original MIDI composition, not an extracted recording of a particular sound card. See scripts/duke-theme-source.json for all source/render hashes and scripts/build_duke_theme.py to rebuild. SoundFont: https://github.com/mrbumpy409/GeneralUser-GS (license v2.0 permits musical recordings). Renderer: https://github.com/schellingb/TinySoundFont (MIT / zlib). Only the rendered Opus is packaged.

KNIGHT RIDER EASTER EGG
music-kitt.opus — Knight Rider theme, CD Instrumental Version.
Composition: Stu Phillips / Glen A. Larson. Performer and CD release not identified by the archive.
Source: https://archive.org/details/tvtunes_375
Copyrighted theme recording; no redistribution license supplied by the archive. Included at the user’s explicit request; not CC0.
Trimmed silence, short edge fades, 48 kHz stereo Opus. Source: 22.05 kHz / 64 kbps MP3.
Rebuild: scripts/build_kitt_theme.py; full provenance: scripts/kitt-theme-source.json.

HALO EASTER EGG
music-halo.opus — Halo, Original Theme.
Composition: Martin O’Donnell / Michael Salvatori.
Source: https://gamesoundanthology.blogs.lincoln.ac.uk/research/
Copyrighted Halo theme; the source supplies a public download but no redistribution license. Halo belongs to Microsoft; music by Martin O’Donnell and Michael Salvatori. Included at the user’s request; not CC0.
48 kHz stereo Opus, 160 kbit/s VBR, edge fades and 0.85 gain. First six seconds removed by stream copy.
Rebuild: scripts/build_halo_theme.py; provenance: scripts/halo-theme-source.json.

BACK TO THE FUTURE EASTER EGG
music-bttf.opus — Back to the Future - Main Theme.
Composer: Alan Silvestri. Performer/release not identified by the source.
Source: https://mepro-music.com/portfolio-item/back-to-the-future-alan-silvestri/
Copyrighted composition and recording; the source page supplies no game redistribution license. Included at the user’s explicit request; not CC0.
Source: 44.1 kHz, stereo, 192 kbit/s MP3. Output: 48 kHz stereo Opus, 160 kbit/s VBR.
Silence trimmed, short boundary fades, full 193.60-second musical phrase and tail.
Rebuild: scripts/build_bttf_theme.py; provenance: scripts/bttf-theme-source.json.

BATMAN EASTER EGG
music-batman.opus — The Batman Theme, Danny Elfman, Batman (1989).
Official Elfman/Burton 25th Anniversary Music Box recording.
Source: https://www.dannyelfman.com/elfman-burton/batman
Copyrighted composition and recording. Publicly playable audio supplied on Danny Elfman’s official website; no redistribution license supplied. Included at the user’s request; not CC0.
48 kHz stereo Opus, 160 kbit/s VBR, short boundary fades, 0.85 gain.
Rebuild: scripts/build_batman_theme.py; provenance: scripts/batman-theme-source.json.

INITIAL D EASTER EGG
music-initiald.opus — around the world by m.o.v.e.
Source: https://nnty.fun/downloads/music/lolicore/CPMC%20-%20unrelated/CPMC/EUROBEAT/Initial%20D%20Music%20Collection/Initial%20D%20Music%20%20Collection%20%5Bver.%205.1%5D/%5B2014.07.11%5D%20Initial%20D%20Final%20Best%20Collection/
Copyrighted composition and recording; the download source supplies no game redistribution license. Included at the user’s explicit request; not CC0.
Source: 44.1 kHz stereo 320 kbit/s MP3. Output: 48 kHz stereo Opus, 160 kbit/s VBR.
Complete song; trailing silence trimmed, tiny boundary fades and 0.85 gain.
Rebuild: scripts/build_initiald_theme.py; provenance: scripts/initiald-theme-source.json.
END INITIAL D EASTER EGG

MR BEAN EASTER EGG
music-bean.opus — Ecce Homo (Mr Bean live-action theme), composed by Howard Goodall.
Source: https://archive.org/details/tvtunes_1798
Copyrighted composition and recording; archive supplies no game redistribution license. Included at the user’s explicit request; not CC0.
Source: 44.1 kHz stereo MP3, approximately 51 kbit/s. Recording performers uncredited by archive.
Output: 48 kHz stereo Opus, 128 kbit/s VBR; boundary silence trimmed, tiny edge fades.
Rebuild: scripts/build_bean_theme.py; source and encoding: scripts/bean-theme-source.json.
END MR BEAN EASTER EGG

MACH5 EASTER EGG
music-mach5.opus — Mach GoGoGo (original Japanese Speed Racer theme).
Source: https://archive.org/details/tvtunes_13057
Copyrighted composition and recording; archive supplies no game redistribution license. Included at the user’s explicit request; not CC0.
Source: 44.1 kHz stereo MP3, approximately 68 kbit/s. Recording performers uncredited by archive.
Output: 48 kHz stereo Opus, 128 kbit/s VBR; boundary silence trimmed, tiny edge fades.
Rebuild: scripts/build_mach5_theme.py; source and encoding: scripts/mach5-theme-source.json.
END MACH5 EASTER EGG

JURASSIC PARK EASTER EGG
music-jurassic.opus — Jurassic Park main theme, composed by John Williams.
Source: https://mepro-music.com/portfolio-item/jurassic-park-main-theme-j-williams/
Orchestral recording linked by MEPRO on its John Williams score page. The page does not identify the performer or edition; MP3 tags refer to John Williams Greatest Hits. Do not claim this is the 1993 soundtrack master.
Copyrighted composition and recording. MEPRO provides a public audio download but no game redistribution license. Included at the user’s request; not CC0.
48 kHz stereo Opus, 160 kbit/s VBR. Trim 0.4 seconds of leading silence; afade=t=in:d=0.008,afade=t=out:st=332.527354:d=0.16,volume=0.85
Rebuild: scripts/build_jurassic_theme.py; details: scripts/jurassic-theme-source.json.

BEBSCAT MULTICAB THEME
music-bebscat.opus — User-provided theme recording (doodoo.poop).
48 kHz stereo Ogg Opus, copied without re-encoding. Trigger playback starts at 1:38.
Source/output hashes and decoded duration: scripts/bebscat-audio-source.json.
The recording and composition retain their existing rights; this is not a CC0 asset.
Import: scripts/import_bebscat_audio.py.

BUMBLEBEE EASTER EGG
music-bumblebee.opus — The Transformers — Season 1 opening theme (1984).
Source: https://archive.org/details/tvtunes_2367
Copyrighted theme and recording. The public archive supplies no redistribution license. Included at the user’s explicit request; not CC0.
48 kHz stereo Opus, 128 kbit/s VBR, short edge fades and 0.85 gain.
Rebuild: scripts/build_bumblebee_theme.py; provenance: scripts/bumblebee-theme-source.json.