diff --git a/source/core/music/s_advsound.cpp b/source/core/music/s_advsound.cpp
index 4103bf4e0ef..69ae064f4af 100644
--- a/source/core/music/s_advsound.cpp
+++ b/source/core/music/s_advsound.cpp
@@ -41,6 +41,7 @@
 #include "v_text.h"
 #include "s_music.h"
 #include "sc_man.h"
+#include "s_soundinternal.h"
 #include <zmusic.h>
 
 #include "raze_music.h"
@@ -52,6 +53,8 @@ enum SICommands
 	SI_MusicVolume,
 	SI_MidiDevice,
 	SI_MusicAlias,
+	SI_ConReserve,
+	SI_Alias
 };
 
 
@@ -78,12 +81,64 @@ static const char *SICommandStrings[] =
 	"$musicvolume",
 	"$mididevice",
 	"$musicalias",
+	"$conreserve",
+	"$alias",
 	NULL
 };
 
 
 // CODE --------------------------------------------------------------------
 
+//==========================================================================
+//
+// S_ReserveSoundSlot
+//
+// Reserves an empty sound slot and assigns it a resource ID and a name
+// 
+//==========================================================================
+
+int S_ReserveSoundSlot(const char* logicalname, int slotnum, int limit = 6)
+{
+	auto& S_sfx = soundEngine->GetSounds();
+	int sfxid;
+
+	sfxid = soundEngine->FindSoundNoHash(logicalname);
+
+	if (sfxid > 0 && (unsigned int)sfxid < S_sfx.Size())
+	{ // If the sound has already been defined, change the old definition
+		sfxinfo_t* sfx = &S_sfx[sfxid];
+
+		if (sfx->ResourceId != -1)
+		{
+			// If the name was reseved before, delete that mapping.
+			soundEngine->RemoveResourceID(sfx->ResourceId);
+		}
+		if (sfx->bRandomHeader)
+		{
+			FRandomSoundList* rnd = soundEngine->ResolveRandomSound(sfx);
+			rnd->Choices.Reset();
+			rnd->Owner = 0;
+		}
+		sfx->ResourceId = slotnum;
+		sfx->lumpnum = sfx_empty;
+		sfx->bRandomHeader = false;
+		sfx->link = sfxinfo_t::NO_LINK;
+		sfx->bTentative = true;
+		if (sfx->NearLimit == -1)
+		{
+			sfx->NearLimit = 2;
+			sfx->LimitRange = 256 * 256;
+		}
+		//sfx->PitchMask = CurrentPitchMask;
+	}
+	else
+	{ // Otherwise, create a new definition.
+		sfxid = soundEngine->AddSoundLump(logicalname, sfx_empty, 0, slotnum, limit);
+	}
+
+	return sfxid;
+}
+
 //==========================================================================
 //
 // S_ParseSndInfo
@@ -208,7 +263,23 @@ static void S_AddSNDINFO (int lump)
 				}
 				break;
 
+			case SI_ConReserve: {
+				sc.MustGetNumber();
+				int num = sc.Number;
+				sc.MustGetStringName("=");
+				sc.MustGetString();
+				FString name = sc.String;
+				int limit = 6;
+				if (sc.CheckString(","))
+				{
+					sc.MustGetNumber();
+					limit = sc.Number;
+				}
+				S_ReserveSoundSlot(name, num, limit);
 			}
+			}
+
+
 		}
 	}
 }
diff --git a/source/core/raze_sound.h b/source/core/raze_sound.h
index 9802cea93fe..0c6b7170c96 100644
--- a/source/core/raze_sound.h
+++ b/source/core/raze_sound.h
@@ -33,6 +33,7 @@ inline void FX_SetReverbDelay(int delay)
 int S_LookupSound(const char* fn);
 class FSerializer;
 void S_SerializeSounds(FSerializer& arc);
+int S_ReserveSoundSlot(const char* logicalname, int slotnum, int limit = 6);
 
 class RazeSoundEngine : public SoundEngine
 {
diff --git a/source/core/savegamehelp.cpp b/source/core/savegamehelp.cpp
index 96fc6615fdc..675ce1f17df 100644
--- a/source/core/savegamehelp.cpp
+++ b/source/core/savegamehelp.cpp
@@ -102,6 +102,9 @@ static void SerializeGlobals(FSerializer& arc)
 
 static void SerializeSession(FSerializer& arc)
 {
+	// In Duke we now have reliable sound names.
+	if (isDukeLike()) arc.SetUniqueSoundNames();	
+
 	arc.ReadObjects(false);
 	SerializeMap(arc);
 	SerializeStatistics(arc);
diff --git a/source/games/duke/src/sounds.cpp b/source/games/duke/src/sounds.cpp
index 8bfcc71fcae..56815c9e4cb 100644
--- a/source/games/duke/src/sounds.cpp
+++ b/source/games/duke/src/sounds.cpp
@@ -172,7 +172,7 @@ void S_CacheAllSounds(void)
 //
 //==========================================================================
 
-static inline int S_GetPitch(int num)
+static inline int S_GetPitch(FSoundID num)
 {
 	auto soundid = FSoundID::fromInt(num + 1);
 	auto const* snd = soundEngine->GetUserData(soundid);
@@ -203,13 +203,14 @@ int S_GetUserFlags(int num)
 
 int S_DefineSound(unsigned index, const char *filename, int minpitch, int maxpitch, int priority, int type, int distance, float volume)
 {
-	auto& S_sfx = soundEngine->GetSounds();
-	index++;
-	if (index >= S_sfx.Size())
+	int s_index = soundEngine->FindSoundByResID(index);
+	if (s_index == 0)
 	{
-		S_sfx.Resize(index + 1);
+		// If the slot isn't defined, give it a meaningful name containing the index.
+		s_index = S_ReserveSoundSlot(FStringf("ConSound@%04d", index), index, 6);
 	}
-	auto sfx = &S_sfx[index];
+
+	auto sfx = &soundEngine->GetSounds()[s_index];
 	sfx->UserData.Resize(kMaxUserData);
 	auto sndinf = sfx->UserData.Data();
 	sndinf[kFlags] = type & ~SF_ONEINST_INTERNAL;
@@ -235,7 +236,7 @@ int S_DefineSound(unsigned index, const char *filename, int minpitch, int maxpit
 	sndinf[kVolAdjust] = clamp<int>(distance, INT16_MIN, INT16_MAX);
 	sndinf[kWorldTourMapping] = 0;
 	sfx->Volume = volume;
-	sfx->NearLimit = index == TELEPORTER + 1? 6 : 0; // the teleporter sound cannot be unlimited due to how it gets used.
+	//sfx->NearLimit = index == TELEPORTER + 1? 6 : 0; // the teleporter sound cannot be unlimited due to how it gets used.
 	sfx->bTentative = false;
 	sfx->name = std::move(fn);
 	return 0;
@@ -253,7 +254,7 @@ inline bool S_IsAmbientSFX(DDukeActor* actor)
 //
 //==========================================================================
 
-static int GetPositionInfo(DDukeActor* actor, int soundNum, sectortype* sect,
+static int GetPositionInfo(DDukeActor* actor, FSoundID soundID, sectortype* sect,
 							 const DVector3 &cam, const DVector3 &pos, int *distPtr, FVector3 *sndPos)
 {
 	// There's a lot of hackery going on here that could be mapped to rolloff and attenuation parameters.