diff --git a/configure b/configure
index 166c260a6ec..bed9eab3673 100755
--- a/configure
+++ b/configure
@@ -16630,6 +16630,7 @@ then
     enable_x3daudio1_5=${enable_x3daudio1_5:-no}
     enable_x3daudio1_6=${enable_x3daudio1_6:-no}
     enable_x3daudio1_7=${enable_x3daudio1_7:-no}
+    enable_xactengine3_7=${enable_xactengine3_7:-no}
     enable_xapofx1_1=${enable_xapofx1_1:-no}
     enable_xapofx1_2=${enable_xapofx1_2:-no}
     enable_xapofx1_3=${enable_xapofx1_3:-no}
diff --git a/configure.ac b/configure.ac
index 6f5aa8da200..29ff38f169b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1958,6 +1958,7 @@ then
     enable_x3daudio1_5=${enable_x3daudio1_5:-no}
     enable_x3daudio1_6=${enable_x3daudio1_6:-no}
     enable_x3daudio1_7=${enable_x3daudio1_7:-no}
+    enable_xactengine3_7=${enable_xactengine3_7:-no}
     enable_xapofx1_1=${enable_xapofx1_1:-no}
     enable_xapofx1_2=${enable_xapofx1_2:-no}
     enable_xapofx1_3=${enable_xapofx1_3:-no}
diff --git a/dlls/xactengine3_7/Makefile.in b/dlls/xactengine3_7/Makefile.in
index f92aad6680e..6fce27d1628 100644
--- a/dlls/xactengine3_7/Makefile.in
+++ b/dlls/xactengine3_7/Makefile.in
@@ -1,4 +1,7 @@
 MODULE    = xactengine3_7.dll
+IMPORTS   = ole32 uuid
+EXTRALIBS = $(FAUDIO_LIBS)
+EXTRAINCL = $(FAUDIO_CFLAGS)
 
 C_SRCS = \
 	xact_dll.c
diff --git a/dlls/xactengine3_7/xact_dll.c b/dlls/xactengine3_7/xact_dll.c
index ffabc3829f4..3a14db74608 100644
--- a/dlls/xactengine3_7/xact_dll.c
+++ b/dlls/xactengine3_7/xact_dll.c
@@ -19,7 +19,12 @@
 #include "config.h"
 
 #include <stdarg.h>
+#include <FACT.h>
 
+#define NONAMELESSUNION
+#define COBJMACROS
+
+#include "initguid.h"
 #include "xact3.h"
 #include "rpcproxy.h"
 #include "xact_classes.h"
@@ -29,6 +34,457 @@ WINE_DEFAULT_DEBUG_CHANNEL(xact3);
 
 static HINSTANCE instance;
 
+typedef struct _XACT3EngineImpl {
+    IXACT3Engine IXACT3Engine_iface;
+
+    FACTAudioEngine *fact_engine;
+
+    XACT_READFILE_CALLBACK pReadFile;
+    XACT_GETOVERLAPPEDRESULT_CALLBACK pGetOverlappedResult;
+} XACT3EngineImpl;
+
+typedef struct wrap_readfile_struct {
+    XACT3EngineImpl *engine;
+    HANDLE file;
+} wrap_readfile_struct;
+
+static int32_t FACTCALL wrap_readfile(
+    void* hFile,
+    void* lpBuffer,
+    uint32_t nNumberOfBytesRead,
+    uint32_t *lpNumberOfBytesRead,
+    FACTOverlapped *lpOverlapped)
+{
+    wrap_readfile_struct *wrap = (wrap_readfile_struct*) hFile;
+    return wrap->engine->pReadFile(wrap->file, lpBuffer, nNumberOfBytesRead,
+            lpNumberOfBytesRead, (LPOVERLAPPED)lpOverlapped);
+}
+
+static int32_t FACTCALL wrap_getoverlappedresult(
+    void* hFile,
+    FACTOverlapped *lpOverlapped,
+    uint32_t *lpNumberOfBytesTransferred,
+    int32_t bWait)
+{
+    wrap_readfile_struct *wrap = (wrap_readfile_struct*) hFile;
+    return wrap->engine->pGetOverlappedResult(wrap->file, (LPOVERLAPPED)lpOverlapped,
+            lpNumberOfBytesTransferred, bWait);
+}
+
+static inline XACT3EngineImpl *impl_from_IXACT3Engine(IXACT3Engine *iface)
+{
+    return CONTAINING_RECORD(iface, XACT3EngineImpl, IXACT3Engine_iface);
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_QueryInterface(IXACT3Engine *iface,
+        REFIID riid, void **ppvObject)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), ppvObject);
+
+    if(IsEqualGUID(riid, &IID_IUnknown) ||
+            IsEqualGUID(riid, &IID_IXACT3Engine)){
+        *ppvObject = &This->IXACT3Engine_iface;
+    }
+    else
+        *ppvObject = NULL;
+
+    if (*ppvObject){
+        IUnknown_AddRef((IUnknown*)*ppvObject);
+        return S_OK;
+    }
+
+    FIXME("(%p)->(%s,%p), not found\n", This, debugstr_guid(riid), ppvObject);
+
+    return E_NOINTERFACE;
+}
+
+static ULONG WINAPI IXACT3EngineImpl_AddRef(IXACT3Engine *iface)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+    ULONG ref = FACTAudioEngine_AddRef(This->fact_engine);
+    TRACE("(%p)->(): Refcount now %u\n", This, ref);
+    return ref;
+}
+
+static ULONG WINAPI IXACT3EngineImpl_Release(IXACT3Engine *iface)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+    ULONG ref = FACTAudioEngine_Release(This->fact_engine);
+
+    TRACE("(%p)->(): Refcount now %u\n", This, ref);
+
+    if (!ref)
+        HeapFree(GetProcessHeap(), 0, This);
+    return ref;
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_GetRendererCount(IXACT3Engine *iface,
+        XACTINDEX *pnRendererCount)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)->(%p)\n", This, pnRendererCount);
+
+    return FACTAudioEngine_GetRendererCount(This->fact_engine, pnRendererCount);
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_GetRendererDetails(IXACT3Engine *iface,
+        XACTINDEX nRendererIndex, XACT_RENDERER_DETAILS *pRendererDetails)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)->(%d, %p)\n", This, nRendererIndex, pRendererDetails);
+
+    return FACTAudioEngine_GetRendererDetails(This->fact_engine,
+            nRendererIndex, (FACTRendererDetails*) pRendererDetails);
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_GetFinalMixFormat(IXACT3Engine *iface,
+        WAVEFORMATEXTENSIBLE *pFinalMixFormat)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)->(%p)\n", This, pFinalMixFormat);
+
+    return FACTAudioEngine_GetFinalMixFormat(This->fact_engine,
+            (FAudioWaveFormatExtensible*) pFinalMixFormat);
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_Initialize(IXACT3Engine *iface,
+        const XACT_RUNTIME_PARAMETERS *pParams)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+    FACTRuntimeParameters params;
+
+    TRACE("(%p)->(%p)\n", This, pParams);
+
+    memcpy(&params, pParams, sizeof(FACTRuntimeParameters));
+
+    /* FIXME: pXAudio2 and pMasteringVoice are pointers to
+     * IXAudio2/IXAudio2MasteringVoice objects. FACT wants pointers to
+     * FAudio/FAudioMasteringVoice objects. In Wine's XAudio2 implementation, we
+     * actually have them available, but only if you access their internal data.
+     * For now we can just force these pointers to NULL, as XACT simply
+     * generates its own engine and endpoint in that situation. These parameters
+     * are mostly an optimization for games with multiple XACT3Engines that want
+     * a single engine running everything.
+     * -flibit
+     */
+    if (pParams->pXAudio2 != NULL){
+        FIXME("pXAudio2 parameter not supported! Falling back to NULL\n");
+        params.pXAudio2 = NULL;
+
+        if (pParams->pMasteringVoice != NULL){
+            FIXME("pXAudio2 parameter not supported! Falling back to NULL\n");
+            params.pMasteringVoice = NULL;
+        }
+    }
+
+    /* Force Windows I/O, do NOT use the FACT default! */
+    This->pReadFile = (XACT_READFILE_CALLBACK)
+            pParams->fileIOCallbacks.readFileCallback;
+    This->pGetOverlappedResult = (XACT_GETOVERLAPPEDRESULT_CALLBACK)
+            pParams->fileIOCallbacks.getOverlappedResultCallback;
+    if (This->pReadFile == NULL)
+        This->pReadFile = (XACT_READFILE_CALLBACK) ReadFile;
+    if (This->pGetOverlappedResult == NULL)
+        This->pGetOverlappedResult = (XACT_GETOVERLAPPEDRESULT_CALLBACK)
+                GetOverlappedResult;
+    params.fileIOCallbacks.readFileCallback = wrap_readfile;
+    params.fileIOCallbacks.getOverlappedResultCallback = wrap_getoverlappedresult;
+
+    return FACTAudioEngine_Initialize(This->fact_engine, &params);
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_ShutDown(IXACT3Engine *iface)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)\n", This);
+
+    return FACTAudioEngine_ShutDown(This->fact_engine);
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_DoWork(IXACT3Engine *iface)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)\n", This);
+
+    return FACTAudioEngine_DoWork(This->fact_engine);
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_CreateSoundBank(IXACT3Engine *iface,
+        const void* pvBuffer, DWORD dwSize, DWORD dwFlags,
+        DWORD dwAllocAttributes, IXACT3SoundBank **ppSoundBank)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+    FIXME("(%p)->(%p, %u, 0x%x, 0x%x, %p): stub!\n", This, pvBuffer, dwSize, dwFlags,
+            dwAllocAttributes, ppSoundBank);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_CreateInMemoryWaveBank(IXACT3Engine *iface,
+        const void* pvBuffer, DWORD dwSize, DWORD dwFlags,
+        DWORD dwAllocAttributes, IXACT3WaveBank **ppWaveBank)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+    FIXME("(%p)->(%p, %u, 0x%x, 0x%x, %p): stub!\n", This, pvBuffer, dwSize, dwFlags,
+            dwAllocAttributes, ppWaveBank);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_CreateStreamingWaveBank(IXACT3Engine *iface,
+        const XACT_STREAMING_PARAMETERS *pParms,
+        IXACT3WaveBank **ppWaveBank)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+    FIXME("(%p)->(%p, %p): stub!\n", This, pParms, ppWaveBank);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_PrepareInMemoryWave(IXACT3Engine *iface,
+        DWORD dwFlags, WAVEBANKENTRY entry, DWORD *pdwSeekTable,
+        BYTE *pbWaveData, DWORD dwPlayOffset, XACTLOOPCOUNT nLoopCount,
+        IXACT3Wave **ppWave)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+    FIXME("(%p): stub!\n", This);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_PrepareStreamingWave(IXACT3Engine *iface,
+        DWORD dwFlags, WAVEBANKENTRY entry,
+        XACT_STREAMING_PARAMETERS streamingParams, DWORD dwAlignment,
+        DWORD *pdwSeekTable, DWORD dwPlayOffset, XACTLOOPCOUNT nLoopCount,
+        IXACT3Wave **ppWave)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+    FIXME("(%p): stub!\n", This);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_PrepareWave(IXACT3Engine *iface,
+        DWORD dwFlags, PCSTR szWavePath, WORD wStreamingPacketSize,
+        DWORD dwAlignment, DWORD dwPlayOffset, XACTLOOPCOUNT nLoopCount,
+        IXACT3Wave **ppWave)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+    FIXME("(%p): stub!\n", This);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_RegisterNotification(IXACT3Engine *iface,
+        const XACT_NOTIFICATION_DESCRIPTION *pNotificationDesc)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    FIXME("(%p)->(%p): stub!\n", This, pNotificationDesc);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_UnRegisterNotification(IXACT3Engine *iface,
+        const XACT_NOTIFICATION_DESCRIPTION *pNotificationDesc)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    FIXME("(%p)->(%p): stub!\n", This, pNotificationDesc);
+    return E_NOTIMPL;
+}
+
+static XACTCATEGORY WINAPI IXACT3EngineImpl_GetCategory(IXACT3Engine *iface,
+        PCSTR szFriendlyName)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)->(%s)\n", This, szFriendlyName);
+
+    return FACTAudioEngine_GetCategory(This->fact_engine, szFriendlyName);
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_Stop(IXACT3Engine *iface,
+        XACTCATEGORY nCategory, DWORD dwFlags)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)->(%u, 0x%x)\n", This, nCategory, dwFlags);
+
+    return FACTAudioEngine_Stop(This->fact_engine, nCategory, dwFlags);
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_SetVolume(IXACT3Engine *iface,
+        XACTCATEGORY nCategory, XACTVOLUME nVolume)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)->(%u, %f)\n", This, nCategory, nVolume);
+
+    return FACTAudioEngine_SetVolume(This->fact_engine, nCategory, nVolume);
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_Pause(IXACT3Engine *iface,
+        XACTCATEGORY nCategory, BOOL fPause)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)->(%u, %u)\n", This, nCategory, fPause);
+
+    return FACTAudioEngine_Pause(This->fact_engine, nCategory, fPause);
+}
+
+static XACTVARIABLEINDEX WINAPI IXACT3EngineImpl_GetGlobalVariableIndex(
+        IXACT3Engine *iface, PCSTR szFriendlyName)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)->(%s)\n", This, szFriendlyName);
+
+    return FACTAudioEngine_GetGlobalVariableIndex(This->fact_engine,
+            szFriendlyName);
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_SetGlobalVariable(IXACT3Engine *iface,
+        XACTVARIABLEINDEX nIndex, XACTVARIABLEVALUE nValue)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)->(%u, %f)\n", This, nIndex, nValue);
+
+    return FACTAudioEngine_SetGlobalVariable(This->fact_engine, nIndex, nValue);
+}
+
+static HRESULT WINAPI IXACT3EngineImpl_GetGlobalVariable(IXACT3Engine *iface,
+        XACTVARIABLEINDEX nIndex, XACTVARIABLEVALUE *nValue)
+{
+    XACT3EngineImpl *This = impl_from_IXACT3Engine(iface);
+
+    TRACE("(%p)->(%u, %p)\n", This, nIndex, nValue);
+
+    return FACTAudioEngine_GetGlobalVariable(This->fact_engine, nIndex, nValue);
+}
+
+static const IXACT3EngineVtbl XACT3Engine_Vtbl =
+{
+    IXACT3EngineImpl_QueryInterface,
+    IXACT3EngineImpl_AddRef,
+    IXACT3EngineImpl_Release,
+    IXACT3EngineImpl_GetRendererCount,
+    IXACT3EngineImpl_GetRendererDetails,
+    IXACT3EngineImpl_GetFinalMixFormat,
+    IXACT3EngineImpl_Initialize,
+    IXACT3EngineImpl_ShutDown,
+    IXACT3EngineImpl_DoWork,
+    IXACT3EngineImpl_CreateSoundBank,
+    IXACT3EngineImpl_CreateInMemoryWaveBank,
+    IXACT3EngineImpl_CreateStreamingWaveBank,
+    IXACT3EngineImpl_PrepareWave,
+    IXACT3EngineImpl_PrepareInMemoryWave,
+    IXACT3EngineImpl_PrepareStreamingWave,
+    IXACT3EngineImpl_RegisterNotification,
+    IXACT3EngineImpl_UnRegisterNotification,
+    IXACT3EngineImpl_GetCategory,
+    IXACT3EngineImpl_Stop,
+    IXACT3EngineImpl_SetVolume,
+    IXACT3EngineImpl_Pause,
+    IXACT3EngineImpl_GetGlobalVariableIndex,
+    IXACT3EngineImpl_SetGlobalVariable,
+    IXACT3EngineImpl_GetGlobalVariable
+};
+
+void* XACT_Internal_Malloc(size_t size)
+{
+    return CoTaskMemAlloc(size);
+}
+
+void XACT_Internal_Free(void* ptr)
+{
+    return CoTaskMemFree(ptr);
+}
+
+void* XACT_Internal_Realloc(void* ptr, size_t size)
+{
+    return CoTaskMemRealloc(ptr, size);
+}
+
+static HRESULT WINAPI XACT3CF_QueryInterface(IClassFactory *iface, REFIID riid, void **ppobj)
+{
+    if(IsEqualGUID(riid, &IID_IUnknown) ||
+       IsEqualGUID(riid, &IID_IClassFactory))
+    {
+        *ppobj = iface;
+        return S_OK;
+    }
+
+    *ppobj = NULL;
+    WARN("(%p)->(%s, %p): interface not found\n", iface, debugstr_guid(riid), ppobj);
+    return E_NOINTERFACE;
+}
+
+static ULONG WINAPI XACT3CF_AddRef(IClassFactory *iface)
+{
+    return 2;
+}
+
+static ULONG WINAPI XACT3CF_Release(IClassFactory *iface)
+{
+    return 1;
+}
+
+static HRESULT WINAPI XACT3CF_CreateInstance(IClassFactory *iface, IUnknown *pOuter,
+                                               REFIID riid, void **ppobj)
+{
+    HRESULT hr;
+    XACT3EngineImpl *object;
+
+    TRACE("(%p)->(%p,%s,%p)\n", iface, pOuter, debugstr_guid(riid), ppobj);
+
+    *ppobj = NULL;
+
+    if(pOuter)
+        return CLASS_E_NOAGGREGATION;
+
+    object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
+    if(!object)
+        return E_OUTOFMEMORY;
+
+    object->IXACT3Engine_iface.lpVtbl = &XACT3Engine_Vtbl;
+
+    FACTCreateEngineWithCustomAllocatorEXT(
+        0,
+        &object->fact_engine,
+        XACT_Internal_Malloc,
+        XACT_Internal_Free,
+        XACT_Internal_Realloc
+    );
+
+    hr = IXACT3Engine_QueryInterface(&object->IXACT3Engine_iface, riid, ppobj);
+    if(FAILED(hr)){
+        HeapFree(GetProcessHeap(), 0, object);
+        return hr;
+    }
+
+    return hr;
+}
+
+static HRESULT WINAPI XACT3CF_LockServer(IClassFactory *iface, BOOL dolock)
+{
+    TRACE("(%p)->(%d): stub!\n", iface, dolock);
+    return S_OK;
+}
+
+static const IClassFactoryVtbl XACT3CF_Vtbl =
+{
+    XACT3CF_QueryInterface,
+    XACT3CF_AddRef,
+    XACT3CF_Release,
+    XACT3CF_CreateInstance,
+    XACT3CF_LockServer
+};
+
+static IClassFactory XACTFactory = { &XACT3CF_Vtbl };
+
 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD reason, void *pReserved)
 {
     TRACE("(%p, %d, %p)\n", hinstDLL, reason, pReserved);
@@ -50,8 +506,13 @@ HRESULT WINAPI DllCanUnloadNow(void)
 
 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, void **ppv)
 {
-    FIXME("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
+    if (IsEqualGUID(rclsid, &CLSID_XACTEngine37))
+    {
+        TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
+        return IClassFactory_QueryInterface(&XACTFactory, riid, ppv);
+    }
 
+    FIXME("Unknown class %s\n", debugstr_guid(rclsid));
     return CLASS_E_CLASSNOTAVAILABLE;
 }