Large-scale renaming of all Win32 functions and types to use the
standard Windows names.

diff --git a/dlls/msacm32/builtin.c b/dlls/msacm32/builtin.c
index 3ba3339..0981ef7 100644
--- a/dlls/msacm32/builtin.c
+++ b/dlls/msacm32/builtin.c
@@ -18,10 +18,10 @@
  *           MSACM_BuiltinDrivers
  */
 LONG WINAPI MSACM_DummyDriverProc(
-   DWORD dwDriverId, HDRVR32 hdrvr, UINT32 msg,
+   DWORD dwDriverId, HDRVR hdrvr, UINT msg,
    LONG lParam1, LONG lParam2); 
 
-WINE_ACMBUILTINDRIVER32 MSACM_BuiltinDrivers32[] = {
+WINE_ACMBUILTINDRIVER MSACM_BuiltinDrivers[] = {
   { "MSACM.dummy", &MSACM_DummyDriverProc },
   { NULL, NULL }
 };
@@ -30,7 +30,7 @@
  *           MSACM_DummyDriverProc
  */
 LONG WINAPI MSACM_DummyDriverProc(
-   DWORD dwDriverId, HDRVR32 hdrvr, UINT32 msg,
+   DWORD dwDriverId, HDRVR hdrvr, UINT msg,
    LONG lParam1, LONG lParam2)
 {
   switch(msg)
@@ -68,7 +68,7 @@
     default:
       /* FIXME: DefDriverProc not implemented  */
 #if 0
-      DefDriverProc32(dwDriverId, hdrvr, msg, lParam1, lParam2);
+      DefDriverProc(dwDriverId, hdrvr, msg, lParam1, lParam2);
 #endif
       break;
     }
diff --git a/dlls/msacm32/driver.c b/dlls/msacm32/driver.c
index 2d7411a..9917314 100644
--- a/dlls/msacm32/driver.c
+++ b/dlls/msacm32/driver.c
@@ -19,11 +19,11 @@
 /***********************************************************************
  *           acmDriverAddA (MSACM32.2)
  */
-MMRESULT32 WINAPI acmDriverAdd32A(
-  PHACMDRIVERID32 phadid, HINSTANCE32 hinstModule,
+MMRESULT WINAPI acmDriverAddA(
+  PHACMDRIVERID phadid, HINSTANCE hinstModule,
   LPARAM lParam, DWORD dwPriority, DWORD fdwAdd)
 {
-  PWINE_ACMLOCALDRIVER32 pld;
+  PWINE_ACMLOCALDRIVER pld;
   if(!phadid)
     return MMSYSERR_INVALPARAM;
 
@@ -38,10 +38,10 @@
      (fdwAdd & ACM_DRIVERADDF_NOTIFYHWND))
     return MMSYSERR_INVALFLAG;
 
-  pld = HeapAlloc(MSACM_hHeap32, 0, sizeof(WINE_ACMLOCALDRIVER32));
-  pld->pfnDriverProc = (DRIVERPROC32) 
-    GetProcAddress32(hinstModule, "DriverProc");
-  *phadid = (HACMDRIVERID32) MSACM_RegisterDriver32(NULL, NULL, pld);
+  pld = HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMLOCALDRIVER));
+  pld->pfnDriverProc = (DRIVERPROC) 
+    GetProcAddress(hinstModule, "DriverProc");
+  *phadid = (HACMDRIVERID) MSACM_RegisterDriver(NULL, NULL, pld);
 
   /* FIXME: lParam, dwPriority and fdwAdd ignored */
 
@@ -53,8 +53,8 @@
  * FIXME
  *   Not implemented
  */
-MMRESULT32 WINAPI acmDriverAdd32W(
-  PHACMDRIVERID32 phadid, HINSTANCE32 hinstModule,
+MMRESULT WINAPI acmDriverAddW(
+  PHACMDRIVERID phadid, HINSTANCE hinstModule,
   LPARAM lParam, DWORD dwPriority, DWORD fdwAdd)
 {
   FIXME(msacm, "(%p, 0x%08x, %ld, %ld, %ld): stub\n",
@@ -67,15 +67,15 @@
 /***********************************************************************
  *           acmDriverClose (MSACM32.4)
  */
-MMRESULT32 WINAPI acmDriverClose32(
-  HACMDRIVER32 had, DWORD fdwClose)
+MMRESULT WINAPI acmDriverClose(
+  HACMDRIVER had, DWORD fdwClose)
 {
-  PWINE_ACMDRIVER32 p;
+  PWINE_ACMDRIVER p;
 
   if(fdwClose)
     return MMSYSERR_INVALFLAG;
 
-  p = MSACM_GetDriver32(had);
+  p = MSACM_GetDriver(had);
   if(!p)
     return MMSYSERR_INVALHANDLE;
 
@@ -84,10 +84,10 @@
   /* FIXME: CloseDriver32 not implemented */
 #if 0
   if(p->hDrvr)
-    CloseDriver32(p->hDrvr, 0, 0);
+    CloseDriver(p->hDrvr, 0, 0);
 #endif
 
-  HeapFree(MSACM_hHeap32, 0, p);
+  HeapFree(MSACM_hHeap, 0, p);
 
   return MMSYSERR_NOERROR;
 }
@@ -95,14 +95,14 @@
 /***********************************************************************
  *           acmDriverDetailsA (MSACM32.5)
  */
-MMRESULT32 WINAPI acmDriverDetails32A(
-  HACMDRIVERID32 hadid, PACMDRIVERDETAILS32A padd, DWORD fdwDetails)
+MMRESULT WINAPI acmDriverDetailsA(
+  HACMDRIVERID hadid, PACMDRIVERDETAILSA padd, DWORD fdwDetails)
 {
-  PWINE_ACMDRIVERID32 p;
-  MMRESULT32 mmr;
-  BOOL32 bOpenTemporary;
+  PWINE_ACMDRIVERID p;
+  MMRESULT mmr;
+  BOOL bOpenTemporary;
 
-  p = MSACM_GetDriverID32(hadid);
+  p = MSACM_GetDriverID(hadid);
   if(!p)
     return MMSYSERR_INVALHANDLE;
   
@@ -112,7 +112,7 @@
   bOpenTemporary = !p->pACMDriver;
   if(bOpenTemporary) {
     bOpenTemporary = TRUE;
-    acmDriverOpen32((PHACMDRIVER32) &p->pACMDriver, hadid, 0);
+    acmDriverOpen((PHACMDRIVER) &p->pACMDriver, hadid, 0);
   }
   
   /* FIXME
@@ -120,13 +120,13 @@
    *   the UNICODE variant of PACMDRIVERDETAILS is used?
    *   It might check cbStruct or does it only accept ANSI.
    */
-  mmr = (MMRESULT32) acmDriverMessage32(
-    (HACMDRIVER32) p->pACMDriver, ACMDM_DRIVER_DETAILS, 
+  mmr = (MMRESULT) acmDriverMessage(
+    (HACMDRIVER) p->pACMDriver, ACMDM_DRIVER_DETAILS, 
     (LPARAM) padd,  0
   );
 
   if(bOpenTemporary) {
-    acmDriverClose32((HACMDRIVER32) p->pACMDriver, 0);
+    acmDriverClose((HACMDRIVER) p->pACMDriver, 0);
     p->pACMDriver = NULL;
   }
 
@@ -138,8 +138,8 @@
  * FIXME
  *   Not implemented
  */
-MMRESULT32 WINAPI acmDriverDetails32W(
-  HACMDRIVERID32 hadid, PACMDRIVERDETAILS32W padd, DWORD fdwDetails)
+MMRESULT WINAPI acmDriverDetailsW(
+  HACMDRIVERID hadid, PACMDRIVERDETAILSW padd, DWORD fdwDetails)
 {
   FIXME(msacm, "(0x%08x, %p, %ld): stub\n", hadid, padd, fdwDetails);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -149,10 +149,10 @@
 /***********************************************************************
  *           acmDriverEnum (MSACM32.7)
  */
-MMRESULT32 WINAPI acmDriverEnum32(
-  ACMDRIVERENUMCB32 fnCallback, DWORD dwInstance, DWORD fdwEnum)
+MMRESULT WINAPI acmDriverEnum(
+  ACMDRIVERENUMCB fnCallback, DWORD dwInstance, DWORD fdwEnum)
 {
-  PWINE_ACMDRIVERID32 p;
+  PWINE_ACMDRIVERID p;
 
   if(!fnCallback)
     {
@@ -164,10 +164,10 @@
       return MMSYSERR_INVALFLAG;
     }
 
-  p = MSACM_pFirstACMDriverID32;
+  p = MSACM_pFirstACMDriverID;
   while(p)
     {
-      (*fnCallback)((HACMDRIVERID32) p, dwInstance, ACMDRIVERDETAILS_SUPPORTF_CODEC);
+      (*fnCallback)((HACMDRIVERID) p, dwInstance, ACMDRIVERDETAILS_SUPPORTF_CODEC);
       p = p->pNextACMDriverID;
     }
 
@@ -177,12 +177,12 @@
 /***********************************************************************
  *           acmDriverID (MSACM32.8)
  */
-MMRESULT32 WINAPI acmDriverID32(
-  HACMOBJ32 hao, PHACMDRIVERID32 phadid, DWORD fdwDriverID)
+MMRESULT WINAPI acmDriverID(
+  HACMOBJ hao, PHACMDRIVERID phadid, DWORD fdwDriverID)
 {
-  PWINE_ACMOBJ32 pao;
+  PWINE_ACMOBJ pao;
 
-  pao = MSACM_GetObj32(hao);
+  pao = MSACM_GetObj(hao);
   if(!pao)
     return MMSYSERR_INVALHANDLE;
 
@@ -192,7 +192,7 @@
   if(fdwDriverID)
     return MMSYSERR_INVALFLAG;
 
-  *phadid = (HACMDRIVERID32) pao->pACMDriverID;
+  *phadid = (HACMDRIVERID) pao->pACMDriverID;
 
   return MMSYSERR_NOERROR;
 }
@@ -202,16 +202,16 @@
  * FIXME
  *   Not implemented
  */
-LRESULT WINAPI acmDriverMessage32(
-  HACMDRIVER32 had, UINT32 uMsg, LPARAM lParam1, LPARAM lParam2)
+LRESULT WINAPI acmDriverMessage(
+  HACMDRIVER had, UINT uMsg, LPARAM lParam1, LPARAM lParam2)
 {
-  PWINE_ACMDRIVER32 pad = MSACM_GetDriver32(had);
+  PWINE_ACMDRIVER pad = MSACM_GetDriver(had);
   if(!pad)
     return MMSYSERR_INVALPARAM;
 
   /* FIXME: Check if uMsg legal */
 
-  if(!SendDriverMessage32(pad->hDrvr, uMsg, lParam1, lParam2))
+  if(!SendDriverMessage(pad->hDrvr, uMsg, lParam1, lParam2))
     return MMSYSERR_NOTSUPPORTED;
 
   return MMSYSERR_NOERROR;
@@ -221,15 +221,15 @@
 /***********************************************************************
  *           acmDriverOpen (MSACM32.10)
  */
-MMRESULT32 WINAPI acmDriverOpen32(
-  PHACMDRIVER32 phad, HACMDRIVERID32 hadid, DWORD fdwOpen)
+MMRESULT WINAPI acmDriverOpen(
+  PHACMDRIVER phad, HACMDRIVERID hadid, DWORD fdwOpen)
 {
-  PWINE_ACMDRIVERID32 padid;
+  PWINE_ACMDRIVERID padid;
 
   if(!phad)
     return MMSYSERR_INVALPARAM;
 
-  padid = MSACM_GetDriverID32(hadid); 
+  padid = MSACM_GetDriverID(hadid); 
   if(!padid)
     return MMSYSERR_INVALHANDLE;
 
@@ -244,16 +244,16 @@
     }
 
   padid->pACMDriver = HeapAlloc(
-    MSACM_hHeap32, 0, sizeof(WINE_ACMDRIVER32)
+    MSACM_hHeap, 0, sizeof(WINE_ACMDRIVER)
   );
   padid->pACMDriver->obj.pACMDriverID = padid;
   
   if(!padid->pACMLocalDriver)
       padid->pACMDriver->hDrvr =
-        OpenDriver32A(padid->pszDriverAlias, "drivers32", 0);
+        OpenDriverA(padid->pszDriverAlias, "drivers32", 0);
   else
     {
-      padid->pACMDriver->hDrvr = MSACM_OpenDriverProc32(
+      padid->pACMDriver->hDrvr = MSACM_OpenDriverProc(
 	padid->pACMLocalDriver->pfnDriverProc
       );
     }
@@ -262,7 +262,7 @@
     return MMSYSERR_ERROR;
  
   /* FIXME: Create a WINE_ACMDRIVER32 */
-  *phad = (HACMDRIVER32) NULL;
+  *phad = (HACMDRIVER) NULL;
 
   return MMSYSERR_ERROR;
 }
@@ -270,10 +270,10 @@
 /***********************************************************************
  *           acmDriverPriority (MSACM32.11)
  */
-MMRESULT32 WINAPI acmDriverPriority32(
-  HACMDRIVERID32 hadid, DWORD dwPriority, DWORD fdwPriority)
+MMRESULT WINAPI acmDriverPriority(
+  HACMDRIVERID hadid, DWORD dwPriority, DWORD fdwPriority)
 {
-  PWINE_ACMDRIVERID32 padid;
+  PWINE_ACMDRIVERID padid;
   CHAR szSubKey[17];
   CHAR szBuffer[256];
   LONG lBufferLength = sizeof(szBuffer);
@@ -281,7 +281,7 @@
   HKEY hPriorityKey;
   DWORD dwPriorityCounter;
 
-  padid = MSACM_GetDriverID32(hadid);
+  padid = MSACM_GetDriverID(hadid);
   if(!padid)
     return MMSYSERR_INVALHANDLE;
 
@@ -301,7 +301,7 @@
     (fdwPriority & ACM_DRIVERPRIORITYF_END))
     return MMSYSERR_INVALFLAG;
 
-  lError = RegOpenKey32A(HKEY_CURRENT_USER, 
+  lError = RegOpenKeyA(HKEY_CURRENT_USER, 
     "Software\\Microsoft\\Multimedia\\"
       "Audio Compression Manager\\Priority v4.00",
     &hPriorityKey
@@ -312,8 +312,8 @@
 
   for(dwPriorityCounter = 1; ; dwPriorityCounter++)
   {
-    wsnprintf32A(szSubKey, 17, "Priorty%ld", dwPriorityCounter);
-    lError = RegQueryValue32A(hPriorityKey, szSubKey, szBuffer, &lBufferLength);
+    wsnprintfA(szSubKey, 17, "Priorty%ld", dwPriorityCounter);
+    lError = RegQueryValueA(hPriorityKey, szSubKey, szBuffer, &lBufferLength);
     if(lError != ERROR_SUCCESS)
       break;
 
@@ -331,19 +331,19 @@
 /***********************************************************************
  *           acmDriverRemove (MSACM32.12)
  */
-MMRESULT32 WINAPI acmDriverRemove32(
-  HACMDRIVERID32 hadid, DWORD fdwRemove)
+MMRESULT WINAPI acmDriverRemove(
+  HACMDRIVERID hadid, DWORD fdwRemove)
 {
-  PWINE_ACMDRIVERID32 padid;
+  PWINE_ACMDRIVERID padid;
 
-  padid = MSACM_GetDriverID32(hadid);
+  padid = MSACM_GetDriverID(hadid);
   if(!padid)
     return MMSYSERR_INVALHANDLE;
 
   if(fdwRemove)
     return MMSYSERR_INVALFLAG;
 
-  MSACM_UnregisterDriver32(padid);
+  MSACM_UnregisterDriver(padid);
 
   return MMSYSERR_NOERROR;
 }
diff --git a/dlls/msacm32/filter.c b/dlls/msacm32/filter.c
index 0c4f267..7420343 100644
--- a/dlls/msacm32/filter.c
+++ b/dlls/msacm32/filter.c
@@ -14,8 +14,8 @@
 /***********************************************************************
  *           acmFilterChooseA (MSACM32.13)
  */
-MMRESULT32 WINAPI acmFilterChoose32A(
-  PACMFILTERCHOOSE32A pafltrc)
+MMRESULT WINAPI acmFilterChooseA(
+  PACMFILTERCHOOSEA pafltrc)
 {
   FIXME(msacm, "(%p): stub\n", pafltrc);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -25,8 +25,8 @@
 /***********************************************************************
  *           acmFilterChooseW (MSACM32.14)
  */
-MMRESULT32 WINAPI acmFilterChoose32W(
-  PACMFILTERCHOOSE32W pafltrc)
+MMRESULT WINAPI acmFilterChooseW(
+  PACMFILTERCHOOSEW pafltrc)
 {
   FIXME(msacm, "(%p): stub\n", pafltrc);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -36,8 +36,8 @@
 /***********************************************************************
  *           acmFilterDetailsA (MSACM32.15)
  */
-MMRESULT32 WINAPI acmFilterDetails32A(
-  HACMDRIVER32 had, PACMFILTERDETAILS32A pafd, DWORD fdwDetails)
+MMRESULT WINAPI acmFilterDetailsA(
+  HACMDRIVER had, PACMFILTERDETAILSA pafd, DWORD fdwDetails)
 {
   if(fdwDetails & ~(ACM_FILTERDETAILSF_FILTER))
     return MMSYSERR_INVALFLAG;
@@ -47,7 +47,7 @@
    *   the UNICODE variant of PACMFILTERDETAILS is used?
    *   It might check cbStruct or does it only accept ANSI.
    */
-  return (MMRESULT32) acmDriverMessage32(
+  return (MMRESULT) acmDriverMessage(
     had, ACMDM_FILTER_DETAILS,
     (LPARAM) pafd,  (LPARAM) fdwDetails
   );
@@ -56,8 +56,8 @@
 /***********************************************************************
  *           acmFilterDetailsW (MSACM32.16)
  */
-MMRESULT32 WINAPI acmFilterDetails32W(
-  HACMDRIVER32 had, PACMFILTERDETAILS32W pafd, DWORD fdwDetails)
+MMRESULT WINAPI acmFilterDetailsW(
+  HACMDRIVER had, PACMFILTERDETAILSW pafd, DWORD fdwDetails)
 {
   FIXME(msacm, "(0x%08x, %p, %ld): stub\n", had, pafd, fdwDetails);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -67,9 +67,9 @@
 /***********************************************************************
  *           acmFilterEnumA (MSACM32.17)
  */
-MMRESULT32 WINAPI acmFilterEnum32A(
-  HACMDRIVER32 had, PACMFILTERDETAILS32A pafd, 
-  ACMFILTERENUMCB32A fnCallback, DWORD dwInstance, DWORD fdwEnum)
+MMRESULT WINAPI acmFilterEnumA(
+  HACMDRIVER had, PACMFILTERDETAILSA pafd, 
+  ACMFILTERENUMCBA fnCallback, DWORD dwInstance, DWORD fdwEnum)
 {
   FIXME(msacm, "(0x%08x, %p, %p, %ld, %ld): stub\n",
     had, pafd, fnCallback, dwInstance, fdwEnum
@@ -81,9 +81,9 @@
 /***********************************************************************
  *           acmFilterEnumW (MSACM32.18)
  */
-MMRESULT32 WINAPI acmFilterEnum32W(
-  HACMDRIVER32 had, PACMFILTERDETAILS32W pafd, 
-  ACMFILTERENUMCB32W fnCallback, DWORD dwInstance, DWORD fdwEnum)
+MMRESULT WINAPI acmFilterEnumW(
+  HACMDRIVER had, PACMFILTERDETAILSW pafd, 
+  ACMFILTERENUMCBW fnCallback, DWORD dwInstance, DWORD fdwEnum)
 {
   FIXME(msacm, "(0x%08x, %p, %p, %ld, %ld): stub\n",
     had, pafd, fnCallback, dwInstance, fdwEnum
@@ -95,8 +95,8 @@
 /***********************************************************************
  *           acmFilterTagDetailsA (MSACM32.19)
  */
-MMRESULT32 WINAPI acmFilterTagDetails32A(
-  HACMDRIVER32 had, PACMFILTERTAGDETAILS32A paftd, DWORD fdwDetails)
+MMRESULT WINAPI acmFilterTagDetailsA(
+  HACMDRIVER had, PACMFILTERTAGDETAILSA paftd, DWORD fdwDetails)
 {
   if(fdwDetails & 
      ~(ACM_FILTERTAGDETAILSF_FILTERTAG|
@@ -108,7 +108,7 @@
    *   the UNICODE variant of PACMFILTERTAGDETAILS is used?
    *   It might check cbStruct or does it only accept ANSI.
    */
-  return (MMRESULT32) acmDriverMessage32(
+  return (MMRESULT) acmDriverMessage(
     had, ACMDM_FILTERTAG_DETAILS,
     (LPARAM) paftd,  (LPARAM) fdwDetails
   );
@@ -117,8 +117,8 @@
 /***********************************************************************
  *           acmFilterTagDetailsW (MSACM32.20)
  */
-MMRESULT32 WINAPI acmFilterTagDetails32W(
-  HACMDRIVER32 had, PACMFILTERTAGDETAILS32W paftd, DWORD fdwDetails)
+MMRESULT WINAPI acmFilterTagDetailsW(
+  HACMDRIVER had, PACMFILTERTAGDETAILSW paftd, DWORD fdwDetails)
 {
   FIXME(msacm, "(0x%08x, %p, %ld): stub\n", had, paftd, fdwDetails);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -128,9 +128,9 @@
 /***********************************************************************
  *           acmFilterTagEnumA (MSACM32.21)
  */
-MMRESULT32 WINAPI acmFilterTagEnum32A(
-  HACMDRIVER32 had, PACMFILTERTAGDETAILS32A  paftd,
-  ACMFILTERTAGENUMCB32A fnCallback, DWORD dwInstance, DWORD fdwEnum)
+MMRESULT WINAPI acmFilterTagEnumA(
+  HACMDRIVER had, PACMFILTERTAGDETAILSA  paftd,
+  ACMFILTERTAGENUMCBA fnCallback, DWORD dwInstance, DWORD fdwEnum)
 {
   FIXME(msacm, "(0x%08x, %p, %p, %ld, %ld): stub\n",
     had, paftd, fnCallback, dwInstance, fdwEnum
@@ -142,9 +142,9 @@
 /***********************************************************************
  *           acmFilterTagEnumW (MSACM32.22)
  */
-MMRESULT32 WINAPI acmFilterTagEnum32W(
-  HACMDRIVER32 had, PACMFILTERTAGDETAILS32W paftd,
-  ACMFILTERTAGENUMCB32W fnCallback, DWORD dwInstance, DWORD fdwEnum)
+MMRESULT WINAPI acmFilterTagEnumW(
+  HACMDRIVER had, PACMFILTERTAGDETAILSW paftd,
+  ACMFILTERTAGENUMCBW fnCallback, DWORD dwInstance, DWORD fdwEnum)
 {
   FIXME(msacm, "(0x%08x, %p, %p, %ld, %ld): stub\n",
     had, paftd, fnCallback, dwInstance, fdwEnum
diff --git a/dlls/msacm32/format.c b/dlls/msacm32/format.c
index e780bd1..74e0a1a 100644
--- a/dlls/msacm32/format.c
+++ b/dlls/msacm32/format.c
@@ -15,8 +15,8 @@
 /***********************************************************************
  *           acmFormatChooseA (MSACM32.23)
  */
-MMRESULT32 WINAPI acmFormatChoose32A(
-  PACMFORMATCHOOSE32A pafmtc)
+MMRESULT WINAPI acmFormatChooseA(
+  PACMFORMATCHOOSEA pafmtc)
 {
   FIXME(msacm, "(%p): stub\n", pafmtc);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -26,8 +26,8 @@
 /***********************************************************************
  *           acmFormatChooseW (MSACM32.24)
  */
-MMRESULT32 WINAPI acmFormatChoose32W(
-  PACMFORMATCHOOSE32W pafmtc)
+MMRESULT WINAPI acmFormatChooseW(
+  PACMFORMATCHOOSEW pafmtc)
 {
   FIXME(msacm, "(%p): stub\n", pafmtc);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -37,8 +37,8 @@
 /***********************************************************************
  *           acmFormatDetailsA (MSACM32.25)
  */
-MMRESULT32 WINAPI acmFormatDetails32A(
-  HACMDRIVER32 had, PACMFORMATDETAILS32A pafd, DWORD fdwDetails)
+MMRESULT WINAPI acmFormatDetailsA(
+  HACMDRIVER had, PACMFORMATDETAILSA pafd, DWORD fdwDetails)
 {
   if(fdwDetails & ~(ACM_FORMATDETAILSF_FORMAT))
     return MMSYSERR_INVALFLAG;
@@ -48,7 +48,7 @@
    *   the UNICODE variant of PACMFORMATDETAILS is used?
    *   It might check cbStruct or does it only accept ANSI.
    */
-  return (MMRESULT32) acmDriverMessage32(
+  return (MMRESULT) acmDriverMessage(
     had, ACMDM_FORMAT_DETAILS,
     (LPARAM) pafd,  (LPARAM) fdwDetails
   );
@@ -57,8 +57,8 @@
 /***********************************************************************
  *           acmFormatDetailsW (MSACM32.26)
  */
-MMRESULT32 WINAPI acmFormatDetails32W(
-  HACMDRIVER32 had, PACMFORMATDETAILS32W pafd, DWORD fdwDetails)
+MMRESULT WINAPI acmFormatDetailsW(
+  HACMDRIVER had, PACMFORMATDETAILSW pafd, DWORD fdwDetails)
 {
   FIXME(msacm, "(0x%08x, %p, %ld): stub\n", had, pafd, fdwDetails);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -68,9 +68,9 @@
 /***********************************************************************
  *           acmFormatEnumA (MSACM32.27)
  */
-MMRESULT32 WINAPI acmFormatEnum32A(
-  HACMDRIVER32 had, PACMFORMATDETAILS32A pafd,
-  ACMFORMATENUMCB32A fnCallback, DWORD dwInstance, DWORD fdwEnum)
+MMRESULT WINAPI acmFormatEnumA(
+  HACMDRIVER had, PACMFORMATDETAILSA pafd,
+  ACMFORMATENUMCBA fnCallback, DWORD dwInstance, DWORD fdwEnum)
 {
   FIXME(msacm, "(0x%08x, %p, %p, %ld, %ld): stub\n",
     had, pafd, fnCallback, dwInstance, fdwEnum
@@ -82,9 +82,9 @@
 /***********************************************************************
  *           acmFormatEnumW (MSACM32.28)
  */
-MMRESULT32 WINAPI acmFormatEnum32W(
-  HACMDRIVER32 had, PACMFORMATDETAILS32W pafd,
-  ACMFORMATENUMCB32W fnCallback, DWORD dwInstance,  DWORD fdwEnum)
+MMRESULT WINAPI acmFormatEnumW(
+  HACMDRIVER had, PACMFORMATDETAILSW pafd,
+  ACMFORMATENUMCBW fnCallback, DWORD dwInstance,  DWORD fdwEnum)
 {
   FIXME(msacm, "(0x%08x, %p, %p, %ld, %ld): stub\n",
     had, pafd, fnCallback, dwInstance, fdwEnum
@@ -96,8 +96,8 @@
 /***********************************************************************
  *           acmFormatSuggest (MSACM32.29)
  */
-MMRESULT32 WINAPI acmFormatSuggest32(
-  HACMDRIVER32 had, PWAVEFORMATEX pwfxSrc, PWAVEFORMATEX pwfxDst,
+MMRESULT WINAPI acmFormatSuggest(
+  HACMDRIVER had, PWAVEFORMATEX pwfxSrc, PWAVEFORMATEX pwfxDst,
   DWORD cbwfxDst, DWORD fdwSuggest)
 {
   FIXME(msacm, "(0x%08x, %p, %p, %ld, %ld): stub\n",
@@ -110,8 +110,8 @@
 /***********************************************************************
  *           acmFormatTagDetailsA (MSACM32.30)
  */
-MMRESULT32 WINAPI acmFormatTagDetails32A(
-  HACMDRIVER32 had, PACMFORMATTAGDETAILS32A paftd, DWORD fdwDetails)
+MMRESULT WINAPI acmFormatTagDetailsA(
+  HACMDRIVER had, PACMFORMATTAGDETAILSA paftd, DWORD fdwDetails)
 {
   if(fdwDetails & 
      ~(ACM_FORMATTAGDETAILSF_FORMATTAG|ACM_FORMATTAGDETAILSF_LARGESTSIZE))
@@ -122,7 +122,7 @@
    *   the UNICODE variant of PACMFORMATTAGDETAILS is used?
    *   It might check cbStruct or does it only accept ANSI.
    */
-  return (MMRESULT32) acmDriverMessage32(
+  return (MMRESULT) acmDriverMessage(
     had, ACMDM_FORMATTAG_DETAILS,
     (LPARAM) paftd,  (LPARAM) fdwDetails
   );
@@ -131,8 +131,8 @@
 /***********************************************************************
  *           acmFormatTagDetailsW (MSACM32.31)
  */
-MMRESULT32 WINAPI acmFormatTagDetails32W(
-  HACMDRIVER32 had, PACMFORMATTAGDETAILS32W paftd, DWORD fdwDetails)
+MMRESULT WINAPI acmFormatTagDetailsW(
+  HACMDRIVER had, PACMFORMATTAGDETAILSW paftd, DWORD fdwDetails)
 {
   FIXME(msacm, "(0x%08x, %p, %ld): stub\n", had, paftd, fdwDetails);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -142,9 +142,9 @@
 /***********************************************************************
  *           acmFormatTagEnumA (MSACM32.32)
  */
-MMRESULT32 WINAPI acmFormatTagEnum32A(
-  HACMDRIVER32 had, PACMFORMATTAGDETAILS32A paftd,
-  ACMFORMATTAGENUMCB32A fnCallback, DWORD dwInstance, DWORD fdwEnum)
+MMRESULT WINAPI acmFormatTagEnumA(
+  HACMDRIVER had, PACMFORMATTAGDETAILSA paftd,
+  ACMFORMATTAGENUMCBA fnCallback, DWORD dwInstance, DWORD fdwEnum)
 {
   FIXME(msacm, "(0x%08x, %p, %p, %ld, %ld): stub\n",
     had, paftd, fnCallback, dwInstance, fdwEnum
@@ -156,9 +156,9 @@
 /***********************************************************************
  *           acmFormatTagEnumW (MSACM32.33)
  */
-MMRESULT32 WINAPI acmFormatTagEnum32W(
-  HACMDRIVER32 had, PACMFORMATTAGDETAILS32W paftd,
-  ACMFORMATTAGENUMCB32W fnCallback, DWORD dwInstance, DWORD fdwEnum)
+MMRESULT WINAPI acmFormatTagEnumW(
+  HACMDRIVER had, PACMFORMATTAGDETAILSW paftd,
+  ACMFORMATTAGENUMCBW fnCallback, DWORD dwInstance, DWORD fdwEnum)
 {
   FIXME(msacm, "(0x%08x, %p, %p, %ld, %ld): stub\n",
     had, paftd, fnCallback, dwInstance, fdwEnum
diff --git a/dlls/msacm32/internal.c b/dlls/msacm32/internal.c
index e06d9e1..b1485e4 100644
--- a/dlls/msacm32/internal.c
+++ b/dlls/msacm32/internal.c
@@ -16,34 +16,34 @@
 
 /**********************************************************************/
 
-HANDLE32 MSACM_hHeap32 = (HANDLE32) NULL;
-PWINE_ACMDRIVERID32 MSACM_pFirstACMDriverID32 = NULL;
-PWINE_ACMDRIVERID32 MSACM_pLastACMDriverID32 = NULL;
+HANDLE MSACM_hHeap = (HANDLE) NULL;
+PWINE_ACMDRIVERID MSACM_pFirstACMDriverID = NULL;
+PWINE_ACMDRIVERID MSACM_pLastACMDriverID = NULL;
 
 /***********************************************************************
  *           MSACM_RegisterDriver32() 
  */
-PWINE_ACMDRIVERID32 MSACM_RegisterDriver32(
+PWINE_ACMDRIVERID MSACM_RegisterDriver(
   LPSTR pszDriverAlias, LPSTR pszFileName,
-  PWINE_ACMLOCALDRIVER32 pLocalDriver)
+  PWINE_ACMLOCALDRIVER pLocalDriver)
 {
-  PWINE_ACMDRIVERID32 padid;
-  padid = (PWINE_ACMDRIVERID32) HeapAlloc(
-    MSACM_hHeap32, 0, sizeof(WINE_ACMDRIVERID32)
+  PWINE_ACMDRIVERID padid;
+  padid = (PWINE_ACMDRIVERID) HeapAlloc(
+    MSACM_hHeap, 0, sizeof(WINE_ACMDRIVERID)
   );
   padid->pszDriverAlias = 
-    HEAP_strdupA(MSACM_hHeap32, 0, pszDriverAlias);
+    HEAP_strdupA(MSACM_hHeap, 0, pszDriverAlias);
   padid->pszFileName = 
-    HEAP_strdupA(MSACM_hHeap32, 0, pszFileName);
+    HEAP_strdupA(MSACM_hHeap, 0, pszFileName);
   padid->pACMLocalDriver = pLocalDriver; 
   padid->bEnabled = TRUE;
   padid->pACMDriver = NULL;
   padid->pNextACMDriverID = NULL;
   padid->pPreviousACMDriverID = 
-    MSACM_pLastACMDriverID32;
-  MSACM_pLastACMDriverID32 = padid;
-  if(!MSACM_pFirstACMDriverID32)
-    MSACM_pFirstACMDriverID32 = padid;
+    MSACM_pLastACMDriverID;
+  MSACM_pLastACMDriverID = padid;
+  if(!MSACM_pFirstACMDriverID)
+    MSACM_pFirstACMDriverID = padid;
 
   return padid;
 }
@@ -51,9 +51,9 @@
 /***********************************************************************
  *           MSACM_RegisterAllDrivers32() 
  */
-void MSACM_RegisterAllDrivers32()
+void MSACM_RegisterAllDrivers()
 {
-  PWINE_ACMBUILTINDRIVER32 pbd;
+  PWINE_ACMBUILTINDRIVER pbd;
   LPSTR pszBuffer;
   DWORD dwBufferLength;
 
@@ -61,33 +61,33 @@
    *  What if the user edits system.ini while the program is running?
    *  Does Windows handle that?
    */
-  if(!MSACM_pFirstACMDriverID32)
+  if(!MSACM_pFirstACMDriverID)
     return;
 
   /* FIXME: Do not work! How do I determine the section length? */
   dwBufferLength = 
-    GetPrivateProfileSection32A("drivers32", NULL, 0, "system.ini");
+    GetPrivateProfileSectionA("drivers32", NULL, 0, "system.ini");
 
   pszBuffer = (LPSTR) HeapAlloc(
-    MSACM_hHeap32, 0, dwBufferLength
+    MSACM_hHeap, 0, dwBufferLength
   );
-  if(GetPrivateProfileSection32A(
+  if(GetPrivateProfileSectionA(
     "drivers32", pszBuffer, dwBufferLength, "system.ini"))
     {
       char *s = pszBuffer;
       while(*s)
 	{
-	  if(!lstrncmpi32A("MSACM.", s, 6))
+	  if(!lstrncmpiA("MSACM.", s, 6))
 	    {
 	      char *s2 = s;
 	      while(*s2 != '\0' && *s2 != '=') s2++;
 	      if(*s2)
 		{
 		  *s2++='\0';
-		  MSACM_RegisterDriver32(s, s2, NULL);
+		  MSACM_RegisterDriver(s, s2, NULL);
 		}
 	    }  
-	  s += lstrlen32A(s) + 1; /* Either next char or \0 */
+	  s += lstrlenA(s) + 1; /* Either next char or \0 */
 	}
     }
 
@@ -96,34 +96,34 @@
    *   when the external drivers was. 
    */
 
-  pbd = MSACM_BuiltinDrivers32;
+  pbd = MSACM_BuiltinDrivers;
   while(pbd->pszDriverAlias)
     {
-      PWINE_ACMLOCALDRIVER32 pld;
-      pld = HeapAlloc(MSACM_hHeap32, 0, sizeof(WINE_ACMLOCALDRIVER32));
+      PWINE_ACMLOCALDRIVER pld;
+      pld = HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMLOCALDRIVER));
       pld->pfnDriverProc = pbd->pfnDriverProc;
-      MSACM_RegisterDriver32(pbd->pszDriverAlias, NULL, pld);
+      MSACM_RegisterDriver(pbd->pszDriverAlias, NULL, pld);
       pbd++;
     }
-   HeapFree(MSACM_hHeap32, 0, pszBuffer);
+   HeapFree(MSACM_hHeap, 0, pszBuffer);
 }
 
 /***********************************************************************
  *           MSACM_UnregisterDriver32()
  */
-PWINE_ACMDRIVERID32 MSACM_UnregisterDriver32(PWINE_ACMDRIVERID32 p)
+PWINE_ACMDRIVERID MSACM_UnregisterDriver(PWINE_ACMDRIVERID p)
 {
-  PWINE_ACMDRIVERID32 pNextACMDriverID;
+  PWINE_ACMDRIVERID pNextACMDriverID;
 
   if(p->pACMDriver)
-    acmDriverClose32((HACMDRIVER32) p->pACMDriver, 0);
+    acmDriverClose((HACMDRIVER) p->pACMDriver, 0);
 
   if(p->pszDriverAlias)
-    HeapFree(MSACM_hHeap32, 0, p->pszDriverAlias);
+    HeapFree(MSACM_hHeap, 0, p->pszDriverAlias);
   if(p->pszFileName)
-    HeapFree(MSACM_hHeap32, 0, p->pszFileName);
+    HeapFree(MSACM_hHeap, 0, p->pszFileName);
   if(p->pACMLocalDriver)
-    HeapFree(MSACM_hHeap32, 0, p->pACMLocalDriver);
+    HeapFree(MSACM_hHeap, 0, p->pACMLocalDriver);
 
   if(p->pPreviousACMDriverID)
     p->pPreviousACMDriverID->pNextACMDriverID = p->pNextACMDriverID;
@@ -132,7 +132,7 @@
 
   pNextACMDriverID = p->pNextACMDriverID;
 
-  HeapFree(MSACM_hHeap32, 0, p);
+  HeapFree(MSACM_hHeap, 0, p);
 
   return pNextACMDriverID;
 }
@@ -142,34 +142,34 @@
  * FIXME
  *   Where should this function be called?
  */
-void MSACM_UnregisterAllDrivers32()
+void MSACM_UnregisterAllDrivers()
 {
-  PWINE_ACMDRIVERID32 p = MSACM_pFirstACMDriverID32;
-  while(p) p = MSACM_UnregisterDriver32(p);
+  PWINE_ACMDRIVERID p = MSACM_pFirstACMDriverID;
+  while(p) p = MSACM_UnregisterDriver(p);
 }
 
 /***********************************************************************
  *           MSACM_GetDriverID32() 
  */
-PWINE_ACMDRIVERID32 MSACM_GetDriverID32(HACMDRIVERID32 hDriverID)
+PWINE_ACMDRIVERID MSACM_GetDriverID(HACMDRIVERID hDriverID)
 {
-  return (PWINE_ACMDRIVERID32) hDriverID;
+  return (PWINE_ACMDRIVERID) hDriverID;
 }
 
 /***********************************************************************
  *           MSACM_GetDriver32()
  */
-PWINE_ACMDRIVER32 MSACM_GetDriver32(HACMDRIVER32 hDriver)
+PWINE_ACMDRIVER MSACM_GetDriver(HACMDRIVER hDriver)
 {
-  return (PWINE_ACMDRIVER32) hDriver;
+  return (PWINE_ACMDRIVER) hDriver;
 }
 
 /***********************************************************************
  *           MSACM_GetObj32()
  */
-PWINE_ACMOBJ32 MSACM_GetObj32(HACMOBJ32 hObj)
+PWINE_ACMOBJ MSACM_GetObj(HACMOBJ hObj)
 {
-  return (PWINE_ACMOBJ32) hObj;
+  return (PWINE_ACMOBJ) hObj;
 }
 
 /***********************************************************************
@@ -178,21 +178,21 @@
  *  This function should be integrated with OpenDriver,
  *  renamed and moved there.
  */
-HDRVR32 MSACM_OpenDriverProc32(DRIVERPROC32 pfnDriverProc)
+HDRVR MSACM_OpenDriverProc(DRIVERPROC pfnDriverProc)
 {
 #if 0
-  LPDRIVERITEM32A pDrvr;
+  LPDRIVERITEMA pDrvr;
 
   /* FIXME: This is a very bad solution */
-  pDrvr = (LPDRIVERITEM32A) HeapAlloc(MSACM_hHeap32, HEAP_ZERO_MEMORY, sizeof(DRIVERITEM32A));
+  pDrvr = (LPDRIVERITEMA) HeapAlloc(MSACM_hHeap, HEAP_ZERO_MEMORY, sizeof(DRIVERITEMA));
   pDrvr->count = 1;
   pDrvr->driverproc = pfnDriverProc;
   
   /* FIXME: Send DRV_OPEN among others to DriverProc */
 
-  return (HDRVR32) pDrvr;
+  return (HDRVR) pDrvr;
 #else
-  return (HDRVR32) 0;
+  return (HDRVR) 0;
 #endif
 }
 
diff --git a/dlls/msacm32/msacm32_main.c b/dlls/msacm32/msacm32_main.c
index 655c226..7d9a818 100644
--- a/dlls/msacm32/msacm32_main.c
+++ b/dlls/msacm32/msacm32_main.c
@@ -14,31 +14,31 @@
 
 /**********************************************************************/
 
-static DWORD MSACM_dwProcessesAttached32 = 0;
+static DWORD MSACM_dwProcessesAttached = 0;
 
 /***********************************************************************
  *           MSACM_LibMain32 (MSACM32.init) 
  */
-BOOL32 WINAPI MSACM32_LibMain(
-  HINSTANCE32 hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
+BOOL WINAPI MSACM32_LibMain(
+  HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 {
   switch(fdwReason)
     {
     case DLL_PROCESS_ATTACH:
-      if(MSACM_dwProcessesAttached32 == 0)
+      if(MSACM_dwProcessesAttached == 0)
 	{
-	  MSACM_hHeap32 = HeapCreate(0, 0x10000, 0);
-	  MSACM_RegisterAllDrivers32();
+	  MSACM_hHeap = HeapCreate(0, 0x10000, 0);
+	  MSACM_RegisterAllDrivers();
 	}
-      MSACM_dwProcessesAttached32++;
+      MSACM_dwProcessesAttached++;
       break;
     case DLL_PROCESS_DETACH:
-      MSACM_dwProcessesAttached32--;
-      if(MSACM_dwProcessesAttached32 == 0)
+      MSACM_dwProcessesAttached--;
+      if(MSACM_dwProcessesAttached == 0)
 	{
-	  MSACM_UnregisterAllDrivers32();
-	  HeapDestroy(MSACM_hHeap32);
-	  MSACM_hHeap32 = (HANDLE32) NULL;
+	  MSACM_UnregisterAllDrivers();
+	  HeapDestroy(MSACM_hHeap);
+	  MSACM_hHeap = (HANDLE) NULL;
 	}
       break;
     case DLL_THREAD_ATTACH:
@@ -60,7 +60,7 @@
 /***********************************************************************
  *           acmGetVersion32 (MSACM32.34)
  */
-DWORD WINAPI acmGetVersion32()
+DWORD WINAPI acmGetVersion()
 {
   switch(VERSION_GetVersion()) 
     {
@@ -82,11 +82,11 @@
 /***********************************************************************
  *           acmMetrics (MSACM32.36)
  */
-MMRESULT32 WINAPI acmMetrics32(
-  HACMOBJ32 hao, UINT32 uMetric, LPVOID  pMetric)
+MMRESULT WINAPI acmMetrics(
+  HACMOBJ hao, UINT uMetric, LPVOID  pMetric)
 {
-  PWINE_ACMOBJ32 pao = MSACM_GetObj32(hao);
-  BOOL32 bLocal = TRUE;
+  PWINE_ACMOBJ pao = MSACM_GetObj(hao);
+  BOOL bLocal = TRUE;
 
   FIXME(msacm, "(0x%08x, %d, %p): stub\n", hao, uMetric, pMetric);
 
diff --git a/dlls/msacm32/stream.c b/dlls/msacm32/stream.c
index 21ca98b..760e3a8 100644
--- a/dlls/msacm32/stream.c
+++ b/dlls/msacm32/stream.c
@@ -15,8 +15,8 @@
 /***********************************************************************
  *           acmStreamClose (MSACM32.37)
  */
-MMRESULT32 WINAPI acmStreamClose32(
-  HACMSTREAM32 has, DWORD fdwClose)
+MMRESULT WINAPI acmStreamClose(
+  HACMSTREAM has, DWORD fdwClose)
 {
   FIXME(msacm, "(0x%08x, %ld): stub\n", has, fdwClose);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -26,8 +26,8 @@
 /***********************************************************************
  *           acmStreamConvert (MSACM32.38)
  */
-MMRESULT32 WINAPI acmStreamConvert32(
-  HACMSTREAM32 has, PACMSTREAMHEADER32 pash, DWORD fdwConvert)
+MMRESULT WINAPI acmStreamConvert(
+  HACMSTREAM has, PACMSTREAMHEADER pash, DWORD fdwConvert)
 {
   FIXME(msacm, "(0x%08x, %p, %ld): stub\n", has, pash, fdwConvert);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -37,8 +37,8 @@
 /***********************************************************************
  *           acmStreamMessage (MSACM32.39)
  */
-MMRESULT32 WINAPI acmStreamMessage32(
-  HACMSTREAM32 has, UINT32 uMsg, LPARAM lParam1, LPARAM lParam2)
+MMRESULT WINAPI acmStreamMessage(
+  HACMSTREAM has, UINT uMsg, LPARAM lParam1, LPARAM lParam2)
 {
   FIXME(msacm, "(0x%08x, %u, %ld, %ld): stub\n",
     has, uMsg, lParam1, lParam2
@@ -50,8 +50,8 @@
 /***********************************************************************
  *           acmStreamOpen (MSACM32.40)
  */
-MMRESULT32 WINAPI acmStreamOpen32(
-  PHACMSTREAM32 phas, HACMDRIVER32 had, PWAVEFORMATEX pwfxSrc,
+MMRESULT WINAPI acmStreamOpen(
+  PHACMSTREAM phas, HACMDRIVER had, PWAVEFORMATEX pwfxSrc,
   PWAVEFORMATEX pwfxDst, PWAVEFILTER pwfltr, DWORD dwCallback,
   DWORD dwInstance, DWORD fdwOpen)
 {
@@ -67,8 +67,8 @@
 /***********************************************************************
  *           acmStreamPrepareHeader (MSACM32.41)
  */
-MMRESULT32 WINAPI acmStreamPrepareHeader32(
-  HACMSTREAM32 has, PACMSTREAMHEADER32 pash, DWORD fdwPrepare)
+MMRESULT WINAPI acmStreamPrepareHeader(
+  HACMSTREAM has, PACMSTREAMHEADER pash, DWORD fdwPrepare)
 {
   FIXME(msacm, "(0x%08x, %p, %ld): stub\n", has, pash, fdwPrepare);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -78,8 +78,8 @@
 /***********************************************************************
  *           acmStreamReset (MSACM32.42)
  */
-MMRESULT32 WINAPI acmStreamReset32(
-  HACMSTREAM32 has, DWORD fdwReset)
+MMRESULT WINAPI acmStreamReset(
+  HACMSTREAM has, DWORD fdwReset)
 {
   FIXME(msacm, "(0x%08x, %ld): stub\n", has, fdwReset);
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -89,8 +89,8 @@
 /***********************************************************************
  *           acmStreamSize (MSACM32.43)
  */
-MMRESULT32 WINAPI acmStreamSize32(
-  HACMSTREAM32 has, DWORD cbInput, 
+MMRESULT WINAPI acmStreamSize(
+  HACMSTREAM has, DWORD cbInput, 
   LPDWORD pdwOutputBytes, DWORD fdwSize)
 {
   FIXME(msacm, "(0x%08x, %ld, %p, %ld): stub\n",
@@ -103,8 +103,8 @@
 /***********************************************************************
  *           acmStreamUnprepareHeader (MSACM32.44)
  */
-MMRESULT32 WINAPI acmStreamUnprepareHeader32(
-  HACMSTREAM32 has, PACMSTREAMHEADER32 pash, DWORD fdwUnprepare)
+MMRESULT WINAPI acmStreamUnprepareHeader(
+  HACMSTREAM has, PACMSTREAMHEADER pash, DWORD fdwUnprepare)
 {
   FIXME(msacm, "(0x%08x, %p, %ld): stub\n",
     has, pash, fdwUnprepare