diff --git a/programs/develop/sdk/trunk/sound/include/snd.inc b/programs/develop/sdk/trunk/sound/include/snd.inc
index c8337e83c7..6e56a4e443 100644
--- a/programs/develop/sdk/trunk/sound/include/snd.inc
+++ b/programs/develop/sdk/trunk/sound/include/snd.inc
@@ -30,6 +30,9 @@ SND_SETPAN          equ 14
 SND_GETPAN          equ 15
 SND_GETBUFFSIZE     equ 16
 SND_GETFREESPACE    equ 17
+SND_SETTIMEBASE     equ 18
+SND_GETTIMESTAMP    equ 19
+
 
 DEV_SET_BUFF        equ  4
 DEV_NOTIFY          equ  5
diff --git a/programs/develop/sdk/trunk/sound/include/sound.h b/programs/develop/sdk/trunk/sound/include/sound.h
index 48bb53b67b..87be0e7fff 100644
--- a/programs/develop/sdk/trunk/sound/include/sound.h
+++ b/programs/develop/sdk/trunk/sound/include/sound.h
@@ -71,6 +71,9 @@ extern "C"
 #define SND_GETPAN         15
 #define SND_GETBUFFSIZE    16
 #define SND_GETFREESPACE   17
+#define SND_SETTIMEBASE    18
+#define SND_GETTIMESTAMP   19
+
 
 #define PLAY_SYNC     0x80000000
 
@@ -104,6 +107,9 @@ int _stdcall  GetPan(SNDBUF hBuff, int *pan);
 int _stdcall  GetMasterVol(int* vol);
 int _stdcall  SetMasterVol(int vol);
 
+int _stdcall  SetTimeBase(SNDBUF hBuff, double base);
+int _stdcall  GetTimeStamp(SNDBUF hBuff, double *stamp);
+
 
 typedef struct
 {
diff --git a/programs/develop/sdk/trunk/sound/src/snd.inc b/programs/develop/sdk/trunk/sound/src/snd.inc
index c8337e83c7..a098d41877 100644
--- a/programs/develop/sdk/trunk/sound/src/snd.inc
+++ b/programs/develop/sdk/trunk/sound/src/snd.inc
@@ -30,6 +30,8 @@ SND_SETPAN          equ 14
 SND_GETPAN          equ 15
 SND_GETBUFFSIZE     equ 16
 SND_GETFREESPACE    equ 17
+SND_SETTIMEBASE     equ 18
+SND_GETTIMESTAMP    equ 19
 
 DEV_SET_BUFF        equ  4
 DEV_NOTIFY          equ  5