diff --git a/sound/effects/compressed_air/attribution.txt b/sound/effects/compressed_air/attribution.txt
index 1eff1ab7512..12d30ee0e19 100644
--- a/sound/effects/compressed_air/attribution.txt
+++ b/sound/effects/compressed_air/attribution.txt
@@ -1,8 +1,6 @@
-compressed_air1.ogg is taken from Freesound and converted to ogg:
+tank_insert_clunky.ogg was created by mixing
 https://freesound.org/people/Geoff-Bremner-Audio/sounds/682952/
-compressed_air2.ogg is taken from Freesound and converted to ogg:
-https://freesound.org/people/Geoff-Bremner-Audio/sounds/682816/
-tank_insert_clunky.ogg was created by mixing compressed_air1 and clunk sound from Freesound:
+and
 https://freesound.org/people/BinaryMonkFlint/sounds/333296/
 tank_remove_thunk.ogg was made by mixing two sound tracks from Freesound:
 https://freesound.org/people/lowdjinn/sounds/533885/ and;
diff --git a/sound/effects/compressed_air/compressed_air1.ogg b/sound/effects/compressed_air/compressed_air1.ogg
deleted file mode 100644
index 95ff29fcb07..00000000000
Binary files a/sound/effects/compressed_air/compressed_air1.ogg and /dev/null differ
diff --git a/sound/effects/compressed_air/compressed_air2.ogg b/sound/effects/compressed_air/compressed_air2.ogg
deleted file mode 100644
index b05f52ee485..00000000000
Binary files a/sound/effects/compressed_air/compressed_air2.ogg and /dev/null differ
diff --git a/sound/machines/door/door_locked.ogg b/sound/machines/door/door_locked.ogg
deleted file mode 100644
index 81807127b09..00000000000
Binary files a/sound/machines/door/door_locked.ogg and /dev/null differ
diff --git a/strings/round_start_sounds.txt b/strings/round_start_sounds.txt
index 9981097c308..908abe2e58e 100644
--- a/strings/round_start_sounds.txt
+++ b/strings/round_start_sounds.txt
@@ -1,3 +1,4 @@
+sound/music/lobby_music/title0.ogg
 sound/music/lobby_music/title1.mod
 sound/music/lobby_music/title2.ogg
 sound/music/lobby_music/title3.ogg