diff --git a/src/vstmain.cpp b/src/vstmain.cpp
index ffcc9859..b4b476dd 100755
--- a/src/vstmain.cpp
+++ b/src/vstmain.cpp
@@ -51,7 +51,7 @@ CLlconVST::CLlconVST ( audioMasterCallback AudioMaster ) :
     // we want a single shot timer to shut down the connection if no
     // processing is done anymore (VST host has stopped the stream)
     TimerOnOff.setSingleShot ( true );
-    TimerOnOff.setInterval ( VST_STOP_TIMER_INTERVAL );
+    TimerOnOff.setInterval   ( VST_STOP_TIMER_INTERVAL );
 
     // connect timer event
     connect ( &TimerOnOff, SIGNAL ( timeout() ),
@@ -76,21 +76,46 @@ void CLlconVST::processReplacing ( float**  pvIn,
                                    float**  pvOut,
                                    VstInt32 iNumSamples )
 {
+    int i, j;
+
     // reset stop timer
     TimerOnOff.start();
 
+    // check if client is running, if not, start it
+    if ( !Client.IsRunning() )
+    {
+
+// TODO set iNumSamples in Sound class somehow
+
+        Client.Start();
+    }
+
     // get pointers to actual buffers
     float* pfIn0  = pvIn[0];
     float* pfIn1  = pvIn[1];
     float* pfOut0 = pvOut[0];
     float* pfOut1 = pvOut[1];
 
-
-// TODO here we just copy the data -> add llcon processing here!
-
-    for ( int i = 0; i < iNumSamples; i++ )
+    // copy input data
+    for ( i = 0, j = 0; i < iNumSamples; i++, j += 2 )
     {
-        pfOut0[i] = pfIn0[i];
-        pfOut1[i] = pfIn1[i];
+/*
+        pSound->vecsTmpAudioSndCrdStereo[j]     = pfIn0[i];
+        pSound->vecsTmpAudioSndCrdStereo[j + 1] = pfIn1[i];
+*/
+    }
+
+/*
+    // call processing callback function
+    pSound->ProcessCallback ( pSound->vecsTmpAudioSndCrdStereo );
+*/
+
+    // copy output data
+    for ( i = 0, j = 0; i < iNumSamples; i++, j += 2 )
+    {
+/*
+        pfOut0[i] = pSound->vecsTmpAudioSndCrdStereo[j];
+        pfOut1[i] = pSound->vecsTmpAudioSndCrdStereo[j + 1];
+*/
     }
 }
diff --git a/src/vstsound.h b/src/vstsound.h
index 25995c6c..b018c9ae 100755
--- a/src/vstsound.h
+++ b/src/vstsound.h
@@ -40,6 +40,18 @@ public:
         // TODO
     }
     virtual ~CSound() {}
+
+    virtual int Init ( const int iNewPrefMonoBufferSize )
+    {
+        // TODO we have to query the current VST frame size somehow
+
+const int iVSTMonoBufferSize = iNewPrefMonoBufferSize;
+
+        // init base class
+        CSoundBase::Init ( iVSTMonoBufferSize );
+
+        return iVSTMonoBufferSize;
+    }
 };
 
 #endif // !defined ( _VSTSOUND_H__9518A346345768_11D3_8C0D_EEBF182CF549__INCLUDED_ )
diff --git a/windows/sound.cpp b/windows/sound.cpp
index 5fe3f145..3c6cb17c 100755
--- a/windows/sound.cpp
+++ b/windows/sound.cpp
@@ -460,7 +460,7 @@ int CSound::Init ( const int iNewPrefMonoBufferSize )
         iASIOBufferSizeMono =
             GetActualBufferSize ( iNewPrefMonoBufferSize );
 
-        // init base clasee
+        // init base class
         CSoundBase::Init ( iASIOBufferSizeMono );
 
         // set internal buffer size value and calculate stereo buffer size