diff --git a/scripts/mus_stop_muted.gml b/scripts/mus_stop_muted.gml
index 6c43a2a..1cfc4ec 100644
--- a/scripts/mus_stop_muted.gml
+++ b/scripts/mus_stop_muted.gml
@@ -1,50 +1,50 @@
 /// mus_stop_muted()
-if (audio_is_playing(musTitle) && approximatelyZero(audio_sound_get_gain(musTitle))) audio_stop_sound(musTitle);
-if (audio_is_playing(musFanfare) && approximatelyZero(audio_sound_get_gain(musFanfare))) audio_stop_sound(musFanfare);
-if (audio_is_playing(musMainCave) && approximatelyZero(audio_sound_get_gain(musMainCave))) audio_stop_sound(musMainCave);
-if (audio_is_playing(musMonsterAppear) && approximatelyZero(audio_sound_get_gain(musMonsterAppear))) audio_stop_sound(musMonsterAppear);
-if (audio_is_playing(musAlphaFight) && approximatelyZero(audio_sound_get_gain(musAlphaFight))) audio_stop_sound(musAlphaFight);
-if (audio_is_playing(musCaveAmbience) && approximatelyZero(audio_sound_get_gain(musCaveAmbience))) audio_stop_sound(musCaveAmbience);
-if (audio_is_playing(musArea1A) && approximatelyZero(audio_sound_get_gain(musArea1A))) audio_stop_sound(musArea1A);
-if (audio_is_playing(musArea1B) && approximatelyZero(audio_sound_get_gain(musArea1B))) audio_stop_sound(musArea1B);
-if (audio_is_playing(musTester) && approximatelyZero(audio_sound_get_gain(musTester))) audio_stop_sound(musTester);
-if (audio_is_playing(musAncientGuardian) && approximatelyZero(audio_sound_get_gain(musAncientGuardian))) audio_stop_sound(musAncientGuardian);
-if (audio_is_playing(musItemGet) && approximatelyZero(audio_sound_get_gain(musItemGet))) audio_stop_sound(musItemGet);
-if (audio_is_playing(musArea2A) && approximatelyZero(audio_sound_get_gain(musArea2A))) audio_stop_sound(musArea2A);
-if (audio_is_playing(musArea2B) && approximatelyZero(audio_sound_get_gain(musArea2B))) audio_stop_sound(musArea2B);
-if (audio_is_playing(musArachnus) && approximatelyZero(audio_sound_get_gain(musArachnus))) audio_stop_sound(musArachnus);
-if (audio_is_playing(musArea3A) && approximatelyZero(audio_sound_get_gain(musArea3A))) audio_stop_sound(musArea3A);
-if (audio_is_playing(musArea3B) && approximatelyZero(audio_sound_get_gain(musArea3B))) audio_stop_sound(musArea3B);
-if (audio_is_playing(musTorizoA) && approximatelyZero(audio_sound_get_gain(musTorizoA))) audio_stop_sound(musTorizoA);
-if (audio_is_playing(musTorizoB) && approximatelyZero(audio_sound_get_gain(musTorizoB))) audio_stop_sound(musTorizoB);
-if (audio_is_playing(musGammaFight) && approximatelyZero(audio_sound_get_gain(musGammaFight))) audio_stop_sound(musGammaFight);
-if (audio_is_playing(musMainCave2) && approximatelyZero(audio_sound_get_gain(musMainCave2))) audio_stop_sound(musMainCave2);
-if (audio_is_playing(musLabAmbience) && approximatelyZero(audio_sound_get_gain(musLabAmbience))) audio_stop_sound(musLabAmbience);
-if (audio_is_playing(musCaveAmbienceA4) && approximatelyZero(audio_sound_get_gain(musCaveAmbienceA4))) audio_stop_sound(musCaveAmbienceA4);
-if (audio_is_playing(musArea4A) && approximatelyZero(audio_sound_get_gain(musArea4A))) audio_stop_sound(musArea4A);
-if (audio_is_playing(musArea4B) && approximatelyZero(audio_sound_get_gain(musArea4B))) audio_stop_sound(musArea4B);
-if (audio_is_playing(musReactor) && approximatelyZero(audio_sound_get_gain(musReactor))) audio_stop_sound(musReactor);
-if (audio_is_playing(musZetaFight) && approximatelyZero(audio_sound_get_gain(musZetaFight))) audio_stop_sound(musZetaFight);
-if (audio_is_playing(musArea5A) && approximatelyZero(audio_sound_get_gain(musArea5A))) audio_stop_sound(musArea5A);
-if (audio_is_playing(musArea5B) && approximatelyZero(audio_sound_get_gain(musArea5B))) audio_stop_sound(musArea5B);
-if (audio_is_playing(musEris) && approximatelyZero(audio_sound_get_gain(musEris))) audio_stop_sound(musEris);
-if (audio_is_playing(musItemAmb) && approximatelyZero(audio_sound_get_gain(musItemAmb))) audio_stop_sound(musItemAmb);
+if (audio_is_playing(musTitle) && audio_sound_get_gain(musTitle) == 0) audio_stop_sound(musTitle);
+if (audio_is_playing(musFanfare) && audio_sound_get_gain(musFanfare) == 0) audio_stop_sound(musFanfare);
+if (audio_is_playing(musMainCave) && audio_sound_get_gain(musMainCave) == 0) audio_stop_sound(musMainCave);
+if (audio_is_playing(musMonsterAppear) && audio_sound_get_gain(musMonsterAppear) == 0) audio_stop_sound(musMonsterAppear);
+if (audio_is_playing(musAlphaFight) && audio_sound_get_gain(musAlphaFight) == 0) audio_stop_sound(musAlphaFight);
+if (audio_is_playing(musCaveAmbience) && audio_sound_get_gain(musCaveAmbience) == 0) audio_stop_sound(musCaveAmbience);
+if (audio_is_playing(musArea1A) && audio_sound_get_gain(musArea1A) == 0) audio_stop_sound(musArea1A);
+if (audio_is_playing(musArea1B) && audio_sound_get_gain(musArea1B) == 0) audio_stop_sound(musArea1B);
+if (audio_is_playing(musTester) && audio_sound_get_gain(musTester) == 0) audio_stop_sound(musTester);
+if (audio_is_playing(musAncientGuardian) && audio_sound_get_gain(musAncientGuardian) == 0) audio_stop_sound(musAncientGuardian);
+if (audio_is_playing(musItemGet) && audio_sound_get_gain(musItemGet) == 0) audio_stop_sound(musItemGet);
+if (audio_is_playing(musArea2A) && audio_sound_get_gain(musArea2A) == 0) audio_stop_sound(musArea2A);
+if (audio_is_playing(musArea2B) && audio_sound_get_gain(musArea2B) == 0) audio_stop_sound(musArea2B);
+if (audio_is_playing(musArachnus) && audio_sound_get_gain(musArachnus) == 0) audio_stop_sound(musArachnus);
+if (audio_is_playing(musArea3A) && audio_sound_get_gain(musArea3A) == 0) audio_stop_sound(musArea3A);
+if (audio_is_playing(musArea3B) && audio_sound_get_gain(musArea3B) == 0) audio_stop_sound(musArea3B);
+if (audio_is_playing(musTorizoA) && audio_sound_get_gain(musTorizoA) == 0) audio_stop_sound(musTorizoA);
+if (audio_is_playing(musTorizoB) && audio_sound_get_gain(musTorizoB) == 0) audio_stop_sound(musTorizoB);
+if (audio_is_playing(musGammaFight) && audio_sound_get_gain(musGammaFight) == 0) audio_stop_sound(musGammaFight);
+if (audio_is_playing(musMainCave2) && audio_sound_get_gain(musMainCave2) == 0) audio_stop_sound(musMainCave2);
+if (audio_is_playing(musLabAmbience) && audio_sound_get_gain(musLabAmbience) == 0) audio_stop_sound(musLabAmbience);
+if (audio_is_playing(musCaveAmbienceA4) && audio_sound_get_gain(musCaveAmbienceA4) == 0) audio_stop_sound(musCaveAmbienceA4);
+if (audio_is_playing(musArea4A) && audio_sound_get_gain(musArea4A) == 0) audio_stop_sound(musArea4A);
+if (audio_is_playing(musArea4B) && audio_sound_get_gain(musArea4B) == 0) audio_stop_sound(musArea4B);
+if (audio_is_playing(musReactor) && audio_sound_get_gain(musReactor) == 0) audio_stop_sound(musReactor);
+if (audio_is_playing(musZetaFight) && audio_sound_get_gain(musZetaFight) == 0) audio_stop_sound(musZetaFight);
+if (audio_is_playing(musArea5A) && audio_sound_get_gain(musArea5A) == 0) audio_stop_sound(musArea5A);
+if (audio_is_playing(musArea5B) && audio_sound_get_gain(musArea5B) == 0) audio_stop_sound(musArea5B);
+if (audio_is_playing(musEris) && audio_sound_get_gain(musEris) == 0) audio_stop_sound(musEris);
+if (audio_is_playing(musItemAmb) && audio_sound_get_gain(musItemAmb) == 0) audio_stop_sound(musItemAmb);
 if (file_exists("musItemAmb2.ogg")) {
-    if (audio_is_playing(musItemAmb2) && approximatelyZero(audio_sound_get_gain(musItemAmb2))) audio_stop_sound(musItemAmb2);
+    if (audio_is_playing(musItemAmb2) && audio_sound_get_gain(musItemAmb2) == 0) audio_stop_sound(musItemAmb2);
 }
-if (audio_is_playing(musOmegaFight) && approximatelyZero(audio_sound_get_gain(musOmegaFight))) audio_stop_sound(musOmegaFight);
-if (audio_is_playing(musArea6A) && approximatelyZero(audio_sound_get_gain(musArea6A))) audio_stop_sound(musArea6A);
-if (audio_is_playing(musArea7A) && approximatelyZero(audio_sound_get_gain(musArea7A))) audio_stop_sound(musArea7A);
-if (audio_is_playing(musArea7B) && approximatelyZero(audio_sound_get_gain(musArea7B))) audio_stop_sound(musArea7B);
-if (audio_is_playing(musArea7C) && approximatelyZero(audio_sound_get_gain(musArea7C))) audio_stop_sound(musArea7C);
-if (audio_is_playing(musArea7D) && approximatelyZero(audio_sound_get_gain(musArea7D))) audio_stop_sound(musArea7D);
-if (audio_is_playing(musHatchling) && approximatelyZero(audio_sound_get_gain(musHatchling))) audio_stop_sound(musHatchling);
-if (audio_is_playing(musQueenIntro) && approximatelyZero(audio_sound_get_gain(musQueenIntro))) audio_stop_sound(musQueenIntro);
-if (audio_is_playing(musQueen) && approximatelyZero(audio_sound_get_gain(musQueen))) audio_stop_sound(musQueen);
-if (audio_is_playing(musQueen2) && approximatelyZero(audio_sound_get_gain(musQueen2))) audio_stop_sound(musQueen2);
-if (audio_is_playing(musQueen3) && approximatelyZero(audio_sound_get_gain(musQueen3))) audio_stop_sound(musQueen3);
-if (audio_is_playing(musQueenBreak) && approximatelyZero(audio_sound_get_gain(musQueenBreak))) audio_stop_sound(musQueenBreak);
-if (audio_is_playing(musCredits) && approximatelyZero(audio_sound_get_gain(musCredits))) audio_stop_sound(musCredits);
-if (audio_is_playing(musIntroSeq) && approximatelyZero(audio_sound_get_gain(musIntroSeq))) audio_stop_sound(musIntroSeq);
-if (audio_is_playing(musArea8) && approximatelyZero(audio_sound_get_gain(musArea8))) audio_stop_sound(musArea8);
-if (audio_is_playing(musGenesis) && approximatelyZero(audio_sound_get_gain(musGenesis))) audio_stop_sound(musGenesis);
+if (audio_is_playing(musOmegaFight) && audio_sound_get_gain(musOmegaFight) == 0) audio_stop_sound(musOmegaFight);
+if (audio_is_playing(musArea6A) && audio_sound_get_gain(musArea6A) == 0) audio_stop_sound(musArea6A);
+if (audio_is_playing(musArea7A) && audio_sound_get_gain(musArea7A) == 0) audio_stop_sound(musArea7A);
+if (audio_is_playing(musArea7B) && audio_sound_get_gain(musArea7B) == 0) audio_stop_sound(musArea7B);
+if (audio_is_playing(musArea7C) && audio_sound_get_gain(musArea7C) == 0) audio_stop_sound(musArea7C);
+if (audio_is_playing(musArea7D) && audio_sound_get_gain(musArea7D) == 0) audio_stop_sound(musArea7D);
+if (audio_is_playing(musHatchling) && audio_sound_get_gain(musHatchling) == 0) audio_stop_sound(musHatchling);
+if (audio_is_playing(musQueenIntro) && audio_sound_get_gain(musQueenIntro) == 0) audio_stop_sound(musQueenIntro);
+if (audio_is_playing(musQueen) && audio_sound_get_gain(musQueen) == 0) audio_stop_sound(musQueen);
+if (audio_is_playing(musQueen2) && audio_sound_get_gain(musQueen2) == 0) audio_stop_sound(musQueen2);
+if (audio_is_playing(musQueen3) && audio_sound_get_gain(musQueen3) == 0) audio_stop_sound(musQueen3);
+if (audio_is_playing(musQueenBreak) && audio_sound_get_gain(musQueenBreak) == 0) audio_stop_sound(musQueenBreak);
+if (audio_is_playing(musCredits) && audio_sound_get_gain(musCredits) == 0) audio_stop_sound(musCredits);
+if (audio_is_playing(musIntroSeq) && audio_sound_get_gain(musIntroSeq) == 0) audio_stop_sound(musIntroSeq);
+if (audio_is_playing(musArea8) && audio_sound_get_gain(musArea8) == 0) audio_stop_sound(musArea8);
+if (audio_is_playing(musGenesis) && audio_sound_get_gain(musGenesis) == 0) audio_stop_sound(musGenesis);