diff --git a/Source/Core/AudioCommon/Src/Mixer.cpp b/Source/Core/AudioCommon/Src/Mixer.cpp
index 69bc4699fb..2e9f54d327 100644
--- a/Source/Core/AudioCommon/Src/Mixer.cpp
+++ b/Source/Core/AudioCommon/Src/Mixer.cpp
@@ -25,18 +25,18 @@
 #include "FixedSizeQueue.h"
 #include "AudioCommon.h"
 
-void CMixer::Mix(short *samples, int numSamples)
+int CMixer::Mix(short *samples, int numSamples)
 {
 	if (! samples) {
 		Premix(NULL, 0);
-		return;
+		return 0;
 	}
 	// silence
 	memset(samples, 0, numSamples * 2 * sizeof(short));
 
 	if (g_dspInitialize.pEmulatorState) {
 		if (*g_dspInitialize.pEmulatorState != 0)
-			return;
+			return 0;
 	}
 
 	// first get the DTK Music
@@ -46,9 +46,11 @@ void CMixer::Mix(short *samples, int numSamples)
 
 	Premix(samples, numSamples);
 	
-	push_sync.Enter();
 	int count = 0;
-	while (m_queueSize > queue_minlength && count < numSamples * 2) {
+
+	push_sync.Enter();
+	while (m_queueSize > queue_minlength && count < numSamples * 2) 
+	{
 		int x = samples[count];
 		x += sample_queue.front();
 		if (x > 32767) x = 32767;
@@ -64,6 +66,8 @@ void CMixer::Mix(short *samples, int numSamples)
 		m_queueSize-=2;
 	}
 	push_sync.Leave();
+
+	return count;
 }
 
 
diff --git a/Source/Core/AudioCommon/Src/Mixer.h b/Source/Core/AudioCommon/Src/Mixer.h
index e2394da893..131a620a1e 100644
--- a/Source/Core/AudioCommon/Src/Mixer.h
+++ b/Source/Core/AudioCommon/Src/Mixer.h
@@ -31,7 +31,7 @@ public:
 	CMixer() : m_sampleRate(48000),m_bits(16),m_channels(2), m_mode(2), m_HLEready(false),m_queueSize(0) {}
 
 	// Called from audio threads
-	virtual void Mix(short *sample, int numSamples);
+	virtual int Mix(short *sample, int numSamples);
 	
 	// Called from main thread
 	virtual void PushSamples(short* samples, int num_stereo_samples, int core_sample_rate);
@@ -39,7 +39,9 @@ public:
 	virtual void Premix(short *samples, int numSamples) {}
 
 	int GetSampleRate() {return m_sampleRate;}
-	
+
+	int GetDataSize() {return m_queueSize;}
+
 	void SetThrottle(bool use) { m_throttle = use;}
 	void SetDTKMusic(bool use) { m_EnableDTKMusic = use;}
 
diff --git a/Source/Core/AudioCommon/Src/NullSoundStream.h b/Source/Core/AudioCommon/Src/NullSoundStream.h
index 76f62b9f2f..e65678d9d1 100644
--- a/Source/Core/AudioCommon/Src/NullSoundStream.h
+++ b/Source/Core/AudioCommon/Src/NullSoundStream.h
@@ -23,7 +23,7 @@
 
 class NullMixer : public CMixer {
 public:
-	virtual void Mix(short *sample, int numSamples) {}
+	virtual int Mix(short *sample, int numSamples) {return 0;}
 	virtual void PushSamples(short* samples, int num_stereo_samples, 
 							 int core_sample_rate) {}
 };
diff --git a/Source/Core/AudioCommon/Src/OpenALStream.cpp b/Source/Core/AudioCommon/Src/OpenALStream.cpp
index 3d21b9c7b7..672d581151 100644
--- a/Source/Core/AudioCommon/Src/OpenALStream.cpp
+++ b/Source/Core/AudioCommon/Src/OpenALStream.cpp
@@ -86,7 +86,10 @@ void OpenALStream::Stop()
 
 void OpenALStream::Update()
 {
-	soundSyncEvent.Set();
+	//if (m_mixer->GetDataSize())	//here need debug
+	{
+		soundSyncEvent.Set();
+	}
 }
 
 THREAD_RETURN OpenALStream::ThreadFunc(void* args)
@@ -120,28 +123,37 @@ void OpenALStream::SoundLoop()
 
 	while (!threadData) 
 	{
-		ALint iBuffersProcessed = 0;
-		alGetSourcei(uiSource, AL_BUFFERS_PROCESSED, &iBuffersProcessed);
+		soundCriticalSection.Enter();
+		int numBytesToRender = 32768;	//ya, this is a hack, we need real data count
+		int numBytesRender = m_mixer->Mix(realtimeBuffer, numBytesToRender >> 2);
+		soundCriticalSection.Leave();
 
-		if (iBuffersProcessed)
+		//if (numBytesRender)	//here need debug
 		{
-			// Remove the Buffer from the Queue.  (uiBuffer contains the Buffer ID for the unqueued Buffer)
-			ALuint uiTempBuffer = 0;
-			alSourceUnqueueBuffers(uiSource, 1, &uiTempBuffer);
+			ALint iBuffersProcessed = 0;
+			alGetSourcei(uiSource, AL_BUFFERS_PROCESSED, &iBuffersProcessed);
 
-			soundCriticalSection.Enter();
-			int numBytesToRender = 32768;	//ya, this is a hack, we need real data count
-			 m_mixer->Mix(realtimeBuffer, numBytesToRender >> 2);
-			soundCriticalSection.Leave();
-
-			unsigned long	ulBytesWritten = 0;
-			//if (ulBytesWritten)
+			if (iBuffersProcessed)
 			{
-				//alBufferData(uiTempBuffer, ulFormat, pDecodeBuffer, ulBytesWritten, ulFrequency);
-				alBufferData(uiTempBuffer, AL_FORMAT_STEREO16, realtimeBuffer, numBytesToRender, ulFrequency);
+				// Remove the Buffer from the Queue.  (uiBuffer contains the Buffer ID for the unqueued Buffer)
+				ALuint uiTempBuffer = 0;
+				alSourceUnqueueBuffers(uiSource, 1, &uiTempBuffer);
+/*
+				soundCriticalSection.Enter();
+				int numBytesToRender = 32768;	//ya, this is a hack, we need real data count
+				 m_mixer->Mix(realtimeBuffer, numBytesToRender >> 2);
+				soundCriticalSection.Leave();
+
+				unsigned long	ulBytesWritten = 0;
+*/
+				//if (numBytesRender)
+				{
+					alBufferData(uiTempBuffer, AL_FORMAT_STEREO16, realtimeBuffer, numBytesToRender, ulFrequency);
+				}
 				alSourceQueueBuffers(uiSource, 1, &uiTempBuffer);
 			}
 		}
+		
 		if (!threadData)
 			soundSyncEvent.Wait();
 	}