diff --git a/src/game/mnsound.c b/src/game/mnsound.c
index ba9e83cd4..3d53c9c7e 100644
--- a/src/game/mnsound.c
+++ b/src/game/mnsound.c
@@ -36,14 +36,17 @@ typedef enum SAMPLE_FLAG {
     VOLUME_WIBBLE = 1 << 14,
 } SAMPLE_FLAG;
 
+static MN_SFX_PLAY_INFO SFXPlaying[MAX_PLAYING_FX];
+static int32_t MnSoundMasterVolumeDefault = 32;
+static int16_t MnAmbientLookup[MAX_AMBIENT_FX];
+static int32_t MnAmbientLookupIdx;
+
 void mn_reset_sound_effects()
 {
     if (!SoundIsActive) {
         return;
     }
     MnSoundMasterVolume = MnSoundMasterVolumeDefault;
-    MnSoundMasterFadeOn = 0;
-    MnSoundFadeCounter = 0;
 
     for (int i = 0; i < MAX_PLAYING_FX; i++) {
         mn_clear_fx_slot(&SFXPlaying[i]);
@@ -313,19 +316,6 @@ void mn_update_sound_effects()
         return;
     }
 
-    MnSoundsPlaying = 0;
-
-    if (MnSoundMasterFadeOn) {
-        if (MnSoundFadeCounter == MnSoundFadeRate) {
-            MnSoundFadeCounter = 0;
-            if (MnSoundMasterVolume > 0) {
-                MnSoundMasterVolume--;
-            }
-        } else {
-            MnSoundFadeCounter++;
-        }
-    }
-
     for (int i = 0; i < MAX_PLAYING_FX; i++) {
         MN_SFX_PLAY_INFO *slot = &SFXPlaying[i];
         if (slot->mn_flags & MN_FX_USED) {
@@ -334,7 +324,6 @@ void mn_update_sound_effects()
                     && slot->handle != SOUND_INVALID_HANDLE) {
                     S_SoundSetPanAndVolume(
                         slot->handle, slot->pan, slot->volume);
-                    MnSoundsPlaying++;
                 } else {
                     if (slot->handle != SOUND_INVALID_HANDLE) {
                         S_SoundStopSample(slot->handle);
@@ -348,7 +337,6 @@ void mn_update_sound_effects()
                         && slot->handle != SOUND_INVALID_HANDLE) {
                         S_SoundSetPanAndVolume(
                             slot->handle, slot->pan, slot->volume);
-                        MnSoundsPlaying++;
                     } else {
                         if (slot->handle != SOUND_INVALID_HANDLE) {
                             S_SoundStopSample(slot->handle);
diff --git a/src/global/vars.c b/src/global/vars.c
index 29a3d0c84..8a6e08747 100644
--- a/src/global/vars.c
+++ b/src/global/vars.c
@@ -36,6 +36,7 @@ void (*EffectRoutines[])(ITEM_INFO *item) = {
 };
 
 bool SoundIsActive = true;
+int32_t MnSoundMasterVolume;
 
 int32_t NoInputCount = 0;
 int32_t IDelay;
diff --git a/src/global/vars.h b/src/global/vars.h
index 58ea275db..1747ae604 100644
--- a/src/global/vars.h
+++ b/src/global/vars.h
@@ -92,15 +92,7 @@ extern bool SoundIsActive;
 #define CDLoop                  VAR_U_(0x0045B94C, int32_t)
 #define CDNumTracks             VAR_U_(0x0045B964, int32_t)
 #define CDFlags                 ARRAY_(0x00462C20, int16_t, [MAX_CD_TRACKS])
-#define MnSoundMasterVolume     VAR_U_(0x0045668C, int32_t)
-#define MnSoundMasterVolumeDefault VAR_U_(0x00456690, int32_t)
-#define SFXPlaying              ARRAY_(0x0045E980, MN_SFX_PLAY_INFO, [MAX_PLAYING_FX])
-#define MnAmbientLookup         ARRAY_(0x0045A200, int16_t, [MAX_AMBIENT_FX])
-#define MnSoundMasterFadeOn     VAR_U_(0x0045A21C, int32_t)
-#define MnSoundFadeCounter      VAR_U_(0x0045A220, int32_t)
-#define MnSoundFadeRate         VAR_I_(0x00456694, int32_t, 10)
-#define MnSoundsPlaying         VAR_U_(0x0045A218, int32_t)
-#define MnAmbientLookupIdx      VAR_U_(0x0045A224, int32_t)
+extern int32_t MnSoundMasterVolume;
 
 #define CompassStatus           VAR_U_(0x0045A0A4, int16_t)
 #define CompassSpeed            VAR_U_(0x0045A0A8, int16_t)