diff --git a/cocos2dx/platform/CCCommon.cpp b/cocos2dx/platform/CCCommon.cpp
index d40a026c67..4bc1603b26 100644
--- a/cocos2dx/platform/CCCommon.cpp
+++ b/cocos2dx/platform/CCCommon.cpp
@@ -108,10 +108,12 @@ void CCLog(const char * pszFormat, ...)
 #endif
     va_end(ap);
 
-    SS_printf("%s", szBuf);
 #ifdef _TRANZDA_VM_
-    SS_printf("\n");
+    WCHAR wszBuf[MAX_LEN + 2] = {0};
+    wszBuf[MultiByteToWideChar(CP_UTF8, 0, szBuf, -1, wszBuf, sizeof(wszBuf))] = '\n';
+    OutputDebugStringW(wszBuf);
 #else
+    SS_printf("%s", szBuf);
     SS_printf("\r\n");
     FILE * pf = fopen(s_szLogFilePath, "a+");
     if (! pf)
diff --git a/cocos2dx/platform/wophone/CCApplication_wophone.cpp b/cocos2dx/platform/wophone/CCApplication_wophone.cpp
index c1c4dd827e..b9a523a484 100644
--- a/cocos2dx/platform/wophone/CCApplication_wophone.cpp
+++ b/cocos2dx/platform/wophone/CCApplication_wophone.cpp
@@ -28,9 +28,10 @@ static long long getTimeOfDayMicroSecond()
 #endif
 
 CCApplication::CCApplication()
-: m_bRunning(FALSE)
-, m_bNeedStop(FALSE)
-, m_bInBackground(FALSE)
+: m_bRunning(false)
+, m_bNeedStop(false)
+, m_bInBackground(false)
+, m_bEnterBackgroundCalled(false)
 {
     memset(&m_tMsg, 0, sizeof(m_tMsg));
     SS_GetCurrentGTID(&m_tMsg.gtid);
@@ -108,9 +109,14 @@ Boolean  CCApplication::EventHandler(EventType*  pEvent)
     case EVENT_AppActiveNotify:
         if (pEvent->sParam1 == 0)
         {
+            CCLOG("EVENT_AppActiveNotify false");
             if (!m_bInBackground)
             {
-                applicationDidEnterBackground();
+                if (! m_bEnterBackgroundCalled)
+                {
+                    applicationDidEnterBackground();
+                    m_bEnterBackgroundCalled = true;
+                }
                 m_bInBackground = true;
             }
 
@@ -125,15 +131,17 @@ Boolean  CCApplication::EventHandler(EventType*  pEvent)
                 CfgTurnOnBackLightEx(SYS_BACK_LIGHT_MODE_TIME_LONG);
                 CCLOG("AppActiveNotify::TurnOnBackLight:MODE_TIME_LONG");
             }
-
-//             EnableKeyLock();
-//             CCLOG("AppActiveNotify::InBackground");
         }
         else if (pEvent->sParam1 > 0)
         {
+            CCLOG("EVENT_AppActiveNotify true");
             if (m_bInBackground)
             {
-                applicationWillEnterForeground();
+                if (m_bEnterBackgroundCalled)
+                {
+                    applicationWillEnterForeground();
+                    m_bEnterBackgroundCalled = false;
+                }
                 m_bInBackground = false;
             }
 
@@ -147,13 +155,6 @@ Boolean  CCApplication::EventHandler(EventType*  pEvent)
                 CfgTurnOnBackLightDelay(0x7fffffff);
                 CCLOG("AppActiveNotify::TurnOnBackLight:0x7fffffff");
             }
-
-            // if KeyLock disactived, disable it.
-//             if (! CfgKeyLock_GetActive())
-//             {
-//                 DisableKeyLock();
-//                 CCLOG("AppActiveNotify::DisableKeyLock");
-//             }
         }
         break;
     }
@@ -208,12 +209,12 @@ void CCApplication::switchNotify(int nTurnOn)
 
         if (! nTurnOn)  // turn off screen
         {
-            // CCDirector::sharedDirector()->pause();
-            applicationDidEnterBackground();
+            if (! m_bEnterBackgroundCalled)
+            {
+                applicationDidEnterBackground();
+                m_bEnterBackgroundCalled = true;
+            }
             StopMainLoop();
-
-//             EnableKeyLock();
-//             CCLOG("BLswitchNotify::EnableKeyLock");
         }
         else
         {
@@ -223,15 +224,11 @@ void CCApplication::switchNotify(int nTurnOn)
             CfgTurnOnBackLightDelay(0x7fffffff);
             CCLOG("AppActiveNotify::TurnOnBackLight:0x7fffffff");
 
-//             // if KeyLock disactived, disable it.
-//             if (! CfgKeyLock_GetActive())
-//             {
-//                 DisableKeyLock();
-//                 CCLOG("BLswitchNotify::DisableKeyLock");
-//             }
-// 
-            // CCDirector::sharedDirector()->resume();
-            applicationWillEnterForeground();
+            if (m_bEnterBackgroundCalled)
+            {
+                applicationWillEnterForeground();
+                m_bEnterBackgroundCalled = false;
+            }
             StartMainLoop();
         }
     } while (0);
@@ -244,13 +241,13 @@ bool CCApplication::isInBackground()
 
 void CCApplication::StartMainLoop()
 {
+    m_bNeedStop = FALSE;
     if (m_bRunning)
     {
-        m_bNeedStop = FALSE;
         return;
     }
+    CCLOG("Post StartMainLoop");
     Sys_PostMessage2(MESSAGE_PRIOR_LOWEST, &m_tMsg);
-    m_bRunning = TRUE;
 }
 
 void CCApplication::StopMainLoop()
@@ -262,15 +259,17 @@ Int32 CCApplication::_OnAppIdle(MESSAGE_t * pMsg, UInt32 uData)
 {
     CCApplication& rThis = (CCApplication&) CCApplication::sharedApplication();
     CCEGLView *     pView = CCDirector::sharedDirector()->getOpenGLView();
-    if (pView && rThis.m_bRunning)
+    if (pView)
     {
         if (rThis.m_bNeedStop)
         {
+            CCLOG("_OnAppIdle: Stop");
             rThis.m_bNeedStop = FALSE;
             rThis.m_bRunning  = FALSE;
         }
         else
         {
+            rThis.m_bRunning  = TRUE;
 #ifdef _TRANZDA_VM_
             LARGE_INTEGER nNow;
             QueryPerformanceCounter(&nNow);
diff --git a/cocos2dx/platform/wophone/CCApplication_wophone.h b/cocos2dx/platform/wophone/CCApplication_wophone.h
index 536f11f7a1..4bae54a860 100644
--- a/cocos2dx/platform/wophone/CCApplication_wophone.h
+++ b/cocos2dx/platform/wophone/CCApplication_wophone.h
@@ -109,6 +109,7 @@ protected:
     bool        m_bRunning;
     bool        m_bNeedStop;
     bool        m_bInBackground;
+    bool        m_bEnterBackgroundCalled;
     char        m_AppDataPath[EOS_FILE_MAX_PATH];
     char        m_AppWritablePath[EOS_FILE_MAX_PATH];
 
diff --git a/tests/AppDelegate.cpp b/tests/AppDelegate.cpp
index 6ac18fc83c..a2a79b834f 100644
--- a/tests/AppDelegate.cpp
+++ b/tests/AppDelegate.cpp
@@ -2,8 +2,10 @@
 
 #include "cocos2d.h"
 #include "tests/controller.h"
+#include "SimpleAudioEngine.h"
 
 USING_NS_CC;
+using namespace CocosDenshion;
 
 AppDelegate::AppDelegate()
 {
@@ -51,6 +53,7 @@ bool AppDelegate::initInstance()
 #ifndef _TRANZDA_VM_  
         // on wophone emulator, we copy resources files to Work7/NEWPLUS/TDA_DATA/Data folder instead of zip file
         cocos2d::CCFileUtils::setResource("TestCocos2dx.zip");
+        CocosDenshion::SimpleAudioEngine::setResource("TestCocos2dx.zip");
 #endif
 
 #endif
@@ -93,10 +96,12 @@ bool AppDelegate::applicationDidFinishLaunching()
 void AppDelegate::applicationDidEnterBackground()
 {
     CCDirector::sharedDirector()->pause();
+    SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic();   
 }
 
 // this function will be called when the app is active again
 void AppDelegate::applicationWillEnterForeground()
 {
     CCDirector::sharedDirector()->resume();
+    SimpleAudioEngine::sharedEngine()->resumeBackgroundMusic();   
 }