diff --git a/src/apps/soundrecorder/RecorderWindow.cpp b/src/apps/soundrecorder/RecorderWindow.cpp
index 3fcb03d669..6ad0c6631a 100644
--- a/src/apps/soundrecorder/RecorderWindow.cpp
+++ b/src/apps/soundrecorder/RecorderWindow.cpp
@@ -104,6 +104,7 @@ RecorderWindow::RecorderWindow() :
 		fSoundList(NULL),
 		fPlayFile(NULL),
 		fPlayTrack(NULL),
+		fPlayFrames(0),
 		fSavePanel(NULL),
 		fInitCheck(B_OK)
 {
@@ -139,6 +140,14 @@ RecorderWindow::~RecorderWindow()
 	if (fPlayer) {
 		delete fPlayer;
 	}
+	
+	if (fPlayTrack && fPlayFile)
+		fPlayFile->ReleaseTrack(fPlayTrack);
+	if (fPlayFile)
+		delete fPlayFile;
+	fPlayTrack = NULL;
+	fPlayFile = NULL;
+	
 	//	Clean up items in list view.
 	if (fSoundList) {
 		fSoundList->DeselectAll();
@@ -567,7 +576,7 @@ RecorderWindow::MessageReceived(BMessage * message)
 		}
 		if (message->FindInt64("right", &right) == B_OK) {
 			if (fPlayTrack)
-				fPlayLimit = MIN(fPlayTrack->CountFrames(), (off_t)(right * fPlayFormat.u.raw_audio.frame_rate/1000000LL));
+				fPlayLimit = MIN(fPlayFrames, (off_t)(right * fPlayFormat.u.raw_audio.frame_rate/1000000LL));
 			fScopeView->SetRightTime(right);
 		}
 		if (message->FindInt64("left", &left) == B_OK) {
@@ -679,7 +688,7 @@ RecorderWindow::Play(BMessage * message)
 		return;
 	}
 	
-	fPlayLimit = MIN(fPlayTrack->CountFrames(), (off_t)(fTrackSlider->RightTime()*fPlayFormat.u.raw_audio.frame_rate/1000000LL));
+	fPlayLimit = MIN(fPlayFrames, (off_t)(fTrackSlider->RightTime()*fPlayFormat.u.raw_audio.frame_rate/1000000LL));
 	fPlayTrack->SeekToTime(fTrackSlider->MainTime());
 	fPlayFrame = fPlayTrack->CurrentFrame();
 	
@@ -1036,6 +1045,13 @@ RecorderWindow::UpdatePlayFile()
 	if (! pItem) {
 		return;
 	}
+	
+	if (fPlayTrack && fPlayFile)
+		fPlayFile->ReleaseTrack(fPlayTrack);
+	if (fPlayFile)
+		delete fPlayFile;
+	fPlayTrack = NULL;
+	fPlayFile = NULL;
 
 	status_t err;
 	BEntry& entry = pItem->Entry();
@@ -1047,9 +1063,7 @@ RecorderWindow::UpdatePlayFile()
 		delete fPlayFile;
 		return;
 	}
-	
-	ASSERT(fPlayTrack == NULL);
-	
+		
 	for (int ix=0; ix<fPlayFile->CountTracks(); ix++) {
 		BMediaTrack * track = fPlayFile->TrackAt(ix);
 		fPlayFormat.type = B_MEDIA_RAW_AUDIO;
@@ -1111,6 +1125,8 @@ RecorderWindow::UpdatePlayFile()
 	fScopeView->SetRightTime(fTrackSlider->RightTime());
 	fScopeView->SetLeftTime(fTrackSlider->LeftTime());
 	fScopeView->RenderTrack(fPlayTrack, fPlayFormat);
+	
+	fPlayFrames = fPlayTrack->CountFrames();
 }
 
 
diff --git a/src/apps/soundrecorder/RecorderWindow.h b/src/apps/soundrecorder/RecorderWindow.h
index 143dd2d912..a2beb57d80 100644
--- a/src/apps/soundrecorder/RecorderWindow.h
+++ b/src/apps/soundrecorder/RecorderWindow.h
@@ -121,6 +121,7 @@ private:
 		BMediaTrack *fPlayTrack;
 		int64 fPlayLimit;
 		int64 fPlayFrame;
+		int64 fPlayFrames;
 		
 		media_node fAudioMixerNode;
 		
diff --git a/src/apps/soundrecorder/ScopeView.cpp b/src/apps/soundrecorder/ScopeView.cpp
index a68fdac038..9fd780d6a9 100644
--- a/src/apps/soundrecorder/ScopeView.cpp
+++ b/src/apps/soundrecorder/ScopeView.cpp
@@ -12,9 +12,15 @@
 #include "DrawingTidbits.h"
 #include "ScopeView.h"
 
+//#define TRACE 1
+#ifdef TRACE
+#define TRACE(x) printf(x)
+#else
+#define TRACE(x)
+#endif
 
 ScopeView::ScopeView(BRect rect, uint32 resizeFlags)
-	: BView(rect, "vumeter", resizeFlags, B_WILL_DRAW | B_FRAME_EVENTS),
+	: BView(rect, "scope", resizeFlags, B_WILL_DRAW | B_FRAME_EVENTS),
 	fThreadId(-1),
 	fBitmap(NULL),
 	fIsRendering(false),
@@ -125,12 +131,12 @@ ScopeView::RenderLoop()
 		int32 sumCount = 0;
 		fMediaTrack->SeekToFrame(&frames);
 		
-		printf("begin computing\n");
+		TRACE("begin computing\n");
 		
 		int32 previewIndex = 0;
 		
 		while (fMediaTrack->ReadFrames(samples, &frames) == B_OK) {
-			//printf("reading block\n");
+			//TRACE("reading block\n");
 			framesIndex = 0;
 			
 			while (framesIndex < frames) {
@@ -145,7 +151,7 @@ ScopeView::RenderLoop()
 				}
 				
 				if (sumCount >= totalFrames/20000) {
-					//printf("computing block %ld, sumCount %ld\n", previewIndex, sumCount);
+					//TRACE("computing block %ld, sumCount %ld\n", previewIndex, sumCount);
 					fPreview[previewIndex++] = (int32)(sum / 2 /(totalFrames/20000) / 32767.0 * fHeight / 2 + fHeight / 2);
 					sumCount = 0;
 					sum = 0;
@@ -155,7 +161,7 @@ ScopeView::RenderLoop()
 			
 		}
 		
-		printf("finished computing\n");
+		TRACE("finished computing\n");
 		
 		/* rendering */
 		RenderBitmap();
@@ -262,7 +268,7 @@ ScopeView::RenderBitmap()
 	
 	for (int32 i = leftIndex; i<rightIndex; i++) {
 		BPoint point((i - leftIndex) * width / (rightIndex - leftIndex), fPreview[i]);
-		//printf("point x %f y %f\n", point.x, point.y);
+		//TRACE("point x %f y %f\n", point.x, point.y);
 		fBitmapView->StrokeLine(point, point);
 	}