Magpie Mayhem (id 'mahjong') - audio credits. All files are CC0 1.0 (public domain dedication).
Licences verified on 2026-10-15 (OpenGameArt licence fields; Kenney pack License.txt files).

file                 | source asset / original file                              | author                    | source                                         | licence
music-main.ogg       | Crouch jumping in your walls / crouch-jumping-in-your-walls_0.ogg | Fupi                  | https://opengameart.org/node/159864            | CC0 (OGA licence field)
music-rush.ogg       | Shine Blitz / shineblitz_0.ogg                            | zesona (Chris Murphy)     | https://opengameart.org/content/shine-blitz    | CC0 (OGA licence field)
music-results.ogg    | Music Jingles / Audio/8-Bit jingles/jingles_NES06.ogg     | Kenney (kenney.nl)        | https://kenney.nl/assets/music-jingles         | CC0 1.0
sfx-sunstone.ogg     | Music Jingles / Audio/8-Bit jingles/jingles_NES09.ogg     | Kenney (kenney.nl)        | https://kenney.nl/assets/music-jingles         | CC0 1.0
sfx-heapclear.ogg    | Music Jingles / Audio/8-Bit jingles/jingles_NES13.ogg     | Kenney (kenney.nl)        | https://kenney.nl/assets/music-jingles         | CC0 1.0
sfx-caw.ogg          | Crows singing / Crows.ogg (first caw only, cut on an Ogg page boundary) | IgnasD      | https://opengameart.org/content/crows-singing  | CC0 (OGA licence field)
sfx-clack-1..4.ogg   | Casino Audio / Audio/chips-collide-1..4.ogg               | Kenney (kenney.nl)        | https://kenney.nl/assets/casino-audio          | CC0 1.0
sfx-stack-1.ogg      | Casino Audio / Audio/chips-stack-4.ogg                    | Kenney (kenney.nl)        | https://kenney.nl/assets/casino-audio          | CC0 1.0
sfx-stack-2.ogg      | Casino Audio / Audio/chips-stack-5.ogg                    | Kenney (kenney.nl)        | https://kenney.nl/assets/casino-audio          | CC0 1.0
sfx-shuffle.ogg      | Casino Audio / Audio/chips-handle-2.ogg                   | Kenney (kenney.nl)        | https://kenney.nl/assets/casino-audio          | CC0 1.0
sfx-chime.ogg        | Interface Sounds / Audio/glass_006.ogg                    | Kenney (kenney.nl)        | https://kenney.nl/assets/interface-sounds      | CC0 1.0
sfx-tink.ogg         | Interface Sounds / Audio/glass_002.ogg                    | Kenney (kenney.nl)        | https://kenney.nl/assets/interface-sounds      | CC0 1.0
sfx-pick.ogg         | Interface Sounds / Audio/select_003.ogg                   | Kenney (kenney.nl)        | https://kenney.nl/assets/interface-sounds      | CC0 1.0
sfx-tick.ogg         | Interface Sounds / Audio/tick_001.ogg                     | Kenney (kenney.nl)        | https://kenney.nl/assets/interface-sounds      | CC0 1.0
sfx-ruffle.ogg       | Digital Audio / Audio/phaserDown2.ogg                     | Kenney (kenney.nl)        | https://kenney.nl/assets/digital-audio         | CC0 1.0
sfx-gust.ogg         | Digital Audio / Audio/phaserUp5.ogg                       | Kenney (kenney.nl)        | https://kenney.nl/assets/digital-audio         | CC0 1.0
sfx-lastglint.ogg    | Digital Audio / Audio/twoTone2.ogg                        | Kenney (kenney.nl)        | https://kenney.nl/assets/digital-audio         | CC0 1.0
sfx-flap.ogg         | Impact Sounds / Audio/impactSoft_medium_004.ogg           | Kenney (kenney.nl)        | https://kenney.nl/assets/impact-sounds         | CC0 1.0

All files are renamed copies; none is re-encoded. Phones play no sound (hub convention).

sfx-sunstone-layer-1.ogg | Layered sfx-sunstone.ogg + sfx-caw.ogg (original source details above) | Kenney: Music Jingles; IgnasD: Crows singing, https://opengameart.org/content/crows-singing | CC0 1.0 | 2026-10-17: staggered layering, gentle pitch variation, gain matched, fades; source licenses rechecked on publisher pages. Kenney sources: https://kenney.nl/assets/music-jingles https://kenney.nl/assets/rpg-audio https://kenney.nl/assets/impact-sounds https://kenney.nl/assets/interface-sounds

sfx-sunstone-layer-2.ogg | Layered sfx-sunstone.ogg + sfx-caw.ogg (original source details above) | Kenney: Music Jingles; IgnasD: Crows singing, https://opengameart.org/content/crows-singing | CC0 1.0 | 2026-10-17: staggered layering, gentle pitch variation, gain matched, fades; source licenses rechecked on publisher pages. Kenney sources: https://kenney.nl/assets/music-jingles https://kenney.nl/assets/rpg-audio https://kenney.nl/assets/impact-sounds https://kenney.nl/assets/interface-sounds

2026-10-17 repair: music-rush.ogg decoded to 44.1 kHz stereo float PCM and re-encoded as clean Vorbis quality 6 to remove legacy packet overread warnings. Same decoded musical content; PCM attenuated by 0.4 to avoid over-range Vorbis artifacts, with runtime gain increased from 0.08 to 0.20 so the audible mix remains the same. No loudness normalization applied. Original source and CC0 license attribution above remain unchanged.