diff --git a/include/dsound.h b/include/dsound.h
index 4bd37635307..b29f93c704e 100644
--- a/include/dsound.h
+++ b/include/dsound.h
@@ -62,10 +62,10 @@ DEFINE_GUID(CLSID_DirectSoundCapture8,	0xe4bcac13, 0x7f99, 0x4908, 0x9a, 0x8e, 0
 DEFINE_GUID(CLSID_DirectSoundFullDuplex,0xfea4300c, 0x7959, 0x4147, 0xb2, 0x6a, 0x23, 0x77, 0xb9, 0xe7, 0xa9, 0x1d);
 
 DEFINE_GUID(IID_IDirectSound,		0x279AFA83,0x4981,0x11CE,0xA5,0x21,0x00,0x20,0xAF,0x0B,0xE5,0x60);
-typedef struct IDirectSound IDirectSound,*LPDIRECTSOUND;
+typedef struct IDirectSound IDirectSound,*LPDIRECTSOUND,**LPLPDIRECTSOUND;
 
 DEFINE_GUID(IID_IDirectSound8,		0xC50A7E93,0xF395,0x4834,0x9E,0xF6,0x7F,0xA9,0x9D,0xE5,0x09,0x66);
-typedef struct IDirectSound8 IDirectSound8,*LPDIRECTSOUND8;
+typedef struct IDirectSound8 IDirectSound8,*LPDIRECTSOUND8,**LPLPDIRECTSOUND8;
 
 DEFINE_GUID(IID_IDirectSoundBuffer,	0x279AFA85,0x4981,0x11CE,0xA5,0x21,0x00,0x20,0xAF,0x0B,0xE5,0x60);
 typedef struct IDirectSoundBuffer IDirectSoundBuffer,*LPDIRECTSOUNDBUFFER,**LPLPDIRECTSOUNDBUFFER;
@@ -74,28 +74,28 @@ DEFINE_GUID(IID_IDirectSoundBuffer8,	0x6825A449,0x7524,0x4D82,0x92,0x0F,0x50,0xE
 typedef struct IDirectSoundBuffer8 IDirectSoundBuffer8,*LPDIRECTSOUNDBUFFER8,**LPLPDIRECTSOUNDBUFFER8;
 
 DEFINE_GUID(IID_IDirectSoundNotify,	0xB0210783,0x89cd,0x11d0,0xAF,0x08,0x00,0xA0,0xC9,0x25,0xCD,0x16);
-typedef struct IDirectSoundNotify IDirectSoundNotify,*LPDIRECTSOUNDNOTIFY;
+typedef struct IDirectSoundNotify IDirectSoundNotify,*LPDIRECTSOUNDNOTIFY,**LPLPDIRECTSOUNDNOTIFY;
 #define	IID_IDirectSoundNotify8		IID_IDirectSoundNotify
 
 DEFINE_GUID(IID_IDirectSound3DListener,	0x279AFA84,0x4981,0x11CE,0xA5,0x21,0x00,0x20,0xAF,0x0B,0xE5,0x60);
-typedef struct IDirectSound3DListener IDirectSound3DListener,*LPDIRECTSOUND3DLISTENER;
+typedef struct IDirectSound3DListener IDirectSound3DListener,*LPDIRECTSOUND3DLISTENER,**LPLPDIRECTSOUND3DLISTENER;
 
 DEFINE_GUID(IID_IDirectSound3DBuffer,	0x279AFA86,0x4981,0x11CE,0xA5,0x21,0x00,0x20,0xAF,0x0B,0xE5,0x60);
-typedef struct IDirectSound3DBuffer IDirectSound3DBuffer,*LPDIRECTSOUND3DBUFFER;
+typedef struct IDirectSound3DBuffer IDirectSound3DBuffer,*LPDIRECTSOUND3DBUFFER,**LPLPDIRECTSOUND3DBUFFER;
 
 DEFINE_GUID(IID_IDirectSoundCapture,	0xB0210781,0x89CD,0x11D0,0xAF,0x08,0x00,0xA0,0xC9,0x25,0xCD,0x16);
-typedef struct IDirectSoundCapture IDirectSoundCapture,*LPDIRECTSOUNDCAPTURE;
+typedef struct IDirectSoundCapture IDirectSoundCapture,*LPDIRECTSOUNDCAPTURE,**LPLPDIRECTSOUNDCAPTURE;
 #define	IID_IDirectSoundCapture8	IID_IDirectSoundCapture
-typedef struct IDirectSoundCapture IDirectSoundCapture8,*LPDIRECTSOUNDCAPTURE8;
+typedef struct IDirectSoundCapture IDirectSoundCapture8,*LPDIRECTSOUNDCAPTURE8,**LPLPDIRECTSOUNDCAPTURE8;
 
 DEFINE_GUID(IID_IDirectSoundCaptureBuffer,0xB0210782,0x89CD,0x11D0,0xAF,0x08,0x00,0xA0,0xC9,0x25,0xCD,0x16);
-typedef struct IDirectSoundCaptureBuffer IDirectSoundCaptureBuffer,*LPDIRECTSOUNDCAPTUREBUFFER;
+typedef struct IDirectSoundCaptureBuffer IDirectSoundCaptureBuffer,*LPDIRECTSOUNDCAPTUREBUFFER,**LPLPDIRECTSOUNDCAPTUREBUFFER;
 
 DEFINE_GUID(IID_IDirectSoundCaptureBuffer8,0x00990DF4,0x0DBB,0x4872,0x83,0x3E,0x6D,0x30,0x3E,0x80,0xAE,0xB6);
 typedef struct IDirectSoundCaptureBuffer8 IDirectSoundCaptureBuffer8,*LPDIRECTSOUNDCAPTUREBUFFER8,**LPLPDIRECTSOUNDCAPTUREBUFFER8;
 
 DEFINE_GUID(IID_IDirectSoundFullDuplex,	0xEDCB4C7A,0xDAAB,0x4216,0xA4,0x2E,0x6C,0x50,0x59,0x6D,0xDC,0x1D);
-typedef struct IDirectSoundFullDuplex IDirectSoundFullDuplex,*LPDIRECTSOUNDFULLDUPLEX;
+typedef struct IDirectSoundFullDuplex IDirectSoundFullDuplex,*LPDIRECTSOUNDFULLDUPLEX,**LPLPDIRECTSOUNDFULLDUPLEX;
 #define	IID_IDirectSoundFullDuplex8	IID_IDirectSoundFullDuplex
 
 DEFINE_GUID(DSDEVID_DefaultPlayback,     0xDEF00000,0x9C6D,0x47Ed,0xAA,0xF1,0x4D,0xDA,0x8F,0x2B,0x5C,0x03);