diff --git a/src/Common/Game/IW4/IW4_Assets.h b/src/Common/Game/IW4/IW4_Assets.h
index 36ac21bf..fe22c0ad 100644
--- a/src/Common/Game/IW4/IW4_Assets.h
+++ b/src/Common/Game/IW4/IW4_Assets.h
@@ -1783,12 +1783,40 @@ namespace IW4
         char* data;
     };
 
+    // https://learn.microsoft.com/en-us/windows/win32/api/mmeapi/ns-mmeapi-waveformatex
+    struct XAudioWaveFormatEx
+    {
+        uint16_t wFormatTag;
+        uint16_t nChannels;
+        uint32_t nSamplesPerSec;
+        uint32_t nAvgBytesPerSec;
+        uint16_t nBlockAlign;
+        uint16_t wBitsPerSample;
+        uint16_t cbSize;
+        uint16_t probablyPadding;
+    };
+
+    struct XAudio2Sound
+    {
+        XAudioWaveFormatEx waveFormat;
+        uint8_t unknown_18[4];
+        unsigned int data_len;
+        uint8_t unknown_28[20];
+        char* data;
+    };
+
     struct LoadedSound
     {
         const char* name;
         MssSound sound;
     };
 
+    struct LoadedSound_64
+    {
+        const char* name;
+        XAudio2Sound sound;
+    };
+
     struct StreamedSound
     {
         const char* dir;
diff --git a/src/ZoneCode/Game/IW4/IW4_Commands.txt b/src/ZoneCode/Game/IW4/IW4_Commands.txt
index ac0b4325..ba15caa9 100644
--- a/src/ZoneCode/Game/IW4/IW4_Commands.txt
+++ b/src/ZoneCode/Game/IW4/IW4_Commands.txt
@@ -18,6 +18,7 @@ asset GfxImage AssetImage;
 asset snd_alias_list_t AssetSound;
 asset SndCurve AssetSoundCurve;
 asset LoadedSound AssetLoadedSound;
+asset LoadedSound_64 AssetLoadedSound;
 asset clipMap_t AssetClipMapMp;
 asset ComWorld AssetComWorld;
 asset GameWorldSp AssetGameWorldSp;
diff --git a/src/ZoneCode/Game/IW4/XAssets/LoadedSound.txt b/src/ZoneCode/Game/IW4/XAssets/LoadedSound.txt
index d9131522..40a27e19 100644
--- a/src/ZoneCode/Game/IW4/XAssets/LoadedSound.txt
+++ b/src/ZoneCode/Game/IW4/XAssets/LoadedSound.txt
@@ -4,6 +4,17 @@
 use LoadedSound;
 set block XFILE_BLOCK_TEMP;
 set string name;
+set variant pc32;
+
+use LoadedSound_64;
+set block XFILE_BLOCK_TEMP;
+set string name;
+set variant pc64;
+
+// XAudio2Sound
+use XAudio2Sound;
+set reusable data;
+set count data data_len;
 
 // MssSound
 use MssSound;
@@ -12,4 +23,4 @@ set reusable data;
 set count data info::data_len;
 set condition info::data_ptr never;
 set condition info::initial_ptr never;
-set action SetSoundData(MssSound);
\ No newline at end of file
+set action SetSoundData(MssSound);