diff --git a/src/avtk/avtk_background.h b/src/avtk/avtk_background.h
index c6bb34d..dd7aa0b 100644
--- a/src/avtk/avtk_background.h
+++ b/src/avtk/avtk_background.h
@@ -44,7 +44,7 @@ class Background : public Fl_Widget
       
       label = _label;
       
-      printf("AVTK background label: %s\n", label );
+      //printf("AVTK background label: %s\n", label );
       
       highlight = false;
     }
diff --git a/src/dsp/dsp_dbmeter.hxx b/src/dsp/dsp_dbmeter.hxx
index cf53952..e503954 100644
--- a/src/dsp/dsp_dbmeter.hxx
+++ b/src/dsp/dsp_dbmeter.hxx
@@ -19,6 +19,9 @@ class DBMeter
       fRec0[1] = -96.f;
       fRec1[0] = -96.f;
       fRec1[1] = -96.f;
+      
+      fvbargraph0 = -96.f;
+      fvbargraph1 = -96.f;
     }
     
     int getNumInputs() { return 2;}
diff --git a/src/gui.cxx b/src/gui.cxx
index d63622c..0a3d995 100644
--- a/src/gui.cxx
+++ b/src/gui.cxx
@@ -22,7 +22,8 @@ extern Gui* gui;
 
 void luppp_tooltip(std::string s)
 {
-  gui->setTooltip(s);
+  return;
+  //gui->setTooltip(s);
 }
 
 void Gui::setTooltip( std::string s )
@@ -68,7 +69,7 @@ Gui::Gui() :
   {
     stringstream s;
     s << "Track " << i+1;
-    printf("track name %s\n", s.str().c_str() );
+    //printf("track name %s\n", s.str().c_str() );
     tracks.push_back( new GTrack(8 + i * 118, 40, 110, 600, s.str().c_str() ) );
   }
   
diff --git a/src/jack.cxx b/src/jack.cxx
index 5ea3ddf..8723d0f 100644
--- a/src/jack.cxx
+++ b/src/jack.cxx
@@ -121,7 +121,9 @@ int Jack::process (jack_nframes_t nframes)
   memset( buffers.audio[Buffers::POST_SIDECHAIN],0, sizeof(float) * nframes );
   
   for(int i = 0; i < NTRACKS; i++)
+  {
     memset( buffers.audio[Buffers::TRACK_0 + i], 0, sizeof(float) * nframes );
+  }
   
   jack_midi_clear_buffer( buffers.midi[Buffers::APC_OUTPUT] );
   
diff --git a/src/looper.cxx b/src/looper.cxx
index 1e3eaf5..39d0c63 100644
--- a/src/looper.cxx
+++ b/src/looper.cxx
@@ -175,6 +175,10 @@ void Looper::setSample(int sc, AudioBuffer* ab)
 void Looper::process(int nframes, Buffers* buffers)
 {
   float* in  = buffers->audio[Buffers::MASTER_INPUT];
+  
+  // FIXME:
+  // using the track output causes distortion: clipping / not proper writing.
+  // writing to master fixes issue, so its due to trackOutput or Looper writing...?
   //float* out = buffers->audio[Buffers::TRACK_0 + track];
   float* out = buffers->audio[Buffers::MASTER_OUTPUT];
   
@@ -190,10 +194,10 @@ void Looper::process(int nframes, Buffers* buffers)
       {
         tmpBuffer[i] = sample[int(playPoint)] * gain;
       }
-      playPoint += playbackSpeed;
-      
-      *out++ = 0.f;//sin( playPoint * 440 * 6.24 );
+      playPoint += 1.0; //playbackSpeed;
       
+      //*out++ = sin( playPoint * 440 * 6.24 );
+      *out++ = tmpBuffer[i];
     }
     
     // now pitch-shift the audio in the buffer
diff --git a/src/trackoutput.hxx b/src/trackoutput.hxx
index 2213231..d14d71d 100644
--- a/src/trackoutput.hxx
+++ b/src/trackoutput.hxx
@@ -20,7 +20,7 @@ class TrackOutput : public AudioProcessor
       printf("trackOutput ID: %i\n", track);
       
       // UI update
-      uiUpdateConstant = 44100 / 20;
+      uiUpdateConstant = 44100 / 30;
       uiUpdateCounter  = 44100 / 30;
       
       _toReverb        = 0.0;
@@ -59,17 +59,18 @@ class TrackOutput : public AudioProcessor
         previousInChain->process( nframes, buffers );
       }
       
+      /*
       float* buf = buffers->audio[Buffers::TRACK_0 + track];
       dbMeter.process( nframes, buf, buf );
       
       if (uiUpdateCounter > uiUpdateConstant )
       {
-        //EventTrackSignalLevel e( track, dbMeter.getLeftDB(), dbMeter.getRightDB() );
-        //writeToGuiRingbuffer( &e );
+        EventTrackSignalLevel e( track, dbMeter.getLeftDB(), dbMeter.getRightDB() );
+        writeToGuiRingbuffer( &e );
         uiUpdateCounter = 0;
       }
       uiUpdateCounter += nframes;
-      
+      */
       
       /// copy audio data into reverb / sidechain / master buffers
       float* trackBuf      = buffers->audio[Buffers::TRACK_0 + track];