diff --git a/docs/gui_gamen.png b/docs/gui_gamen.png
index 129c2cd..c051d96 100644
Binary files a/docs/gui_gamen.png and b/docs/gui_gamen.png differ
diff --git a/gui_sampling_rate_converter.py b/gui_sampling_rate_converter.py
index 6081698..8de849d 100644
--- a/gui_sampling_rate_converter.py
+++ b/gui_sampling_rate_converter.py
@@ -15,6 +15,7 @@
 import os
 import sys
 import glob
+import re
 import datetime
 import argparse
 import threading
@@ -261,12 +262,35 @@ def callback1(self,):
     class IORedirector(object):
         def __init__(self, text_area):
             self.text_area = text_area
+            self.line_flag = False
             
     class StdoutRedirector(IORedirector):
         def write(self,st):
-            self.text_area.insert('end', st)
+            if 1: # esc-r
+                # check if there is num/num in st
+                if re.search(r' \d+/\d+',st) is not None:
+                    #
+                    if not self.line_flag:  # start...
+                        self.text_area.insert('end',  st)
+                        self.text_area.insert('end', "\n") # make index up
+                        self.line_flag=True
+                    else:
+                        # delete last 1 line 
+                        self.text_area.delete("end-2l", "end-1l")
+                        #
+                        self.text_area.insert('end', st)
+                        self.text_area.insert('end', "\n") # make index up
+                else:
+                    #self.text_area.insert('end', pos +'>' + st)
+                    self.text_area.insert('end',  st )
+                    if st != "":
+                        self.line_flag = False  # reset line_flag
+            else:
+                self.text_area.insert('end',  st)
+            
             self.text_area.see("end")
         
+        
         def flush(self):
             pass