diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..681a17b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+bin/
+lib/
+pyvenv.cfg
diff --git a/README.md b/README.md
index b491173..5d4ed30 100644
--- a/README.md
+++ b/README.md
@@ -8,10 +8,6 @@ Loaded with OpenEMU v1.03
 
 usage:
 
-ccd2cue.py convert --ccd CCDSHEET 
-
-requared arguments:
-
-  --ccd CCDSHEET  ccd file name
+ccd2cue.py --ccd [path_to_ccd]
 
 
diff --git a/ccd2cue.py b/ccd2cue.py
index f86c69a..4cfa6a5 100755
--- a/ccd2cue.py
+++ b/ccd2cue.py
@@ -1,12 +1,13 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
 '''
 https://github.com/crumpx/ccd2cue.git
 '''
 
-import ConfigParser
+import configparser
 import os
+from datetime import timedelta
 
 def ConfigSectionMap(Config, section):
     dict1 = {}
@@ -26,19 +27,21 @@ def CCD2CUE(ccdsheet):
     cuesheet = os.path.join(filename[0]+'.cue')
     imagetype=('.img','.bin','.iso')
     imgfile = ''
-    files = [f for f in os.listdir('.') if os.path.isfile(f)]
+    basedir = os.path.dirname(ccdsheet)
+    files = list(filter(lambda f: os.path.isfile(os.path.join(basedir,f)), os.listdir(basedir)))
     for f in files:
-        if os.path.splitext(f)[1] in imagetype:
+
+        if os.path.splitext(f)[1].casefold() in map(str.casefold, imagetype):
             imgfile = f
 
-    Config = ConfigParser.ConfigParser()
+    Config = configparser.ConfigParser()
     Config.read(ccdsheet)
-    cuefile = open(cuesheet, 'wb')
+    cuefile = open(cuesheet, 'w')
 
     track_counter = 0
     BEGIN = False
 
-    cuefile.write("FILE \"%s\" BINARY\r\n" % (imgfile))
+    cuefile.write("FILE \"%s\" BINARY\n" % (imgfile))
     for item in Config.sections():
         if 'Entry' not in item:
             continue
@@ -49,27 +52,33 @@ def CCD2CUE(ccdsheet):
         trackinfo['minute'] = int(ConfigSectionMap(Config, item)['pmin'])
         trackinfo['second'] = int(ConfigSectionMap(Config,item)['psec'])
         trackinfo['frame'] = int(ConfigSectionMap(Config,item)['pframe'])
+        
+
 
         if int(ConfigSectionMap(Config,item)['plba']) == 0:
             BEGIN = True
 
-        if BEGIN is True:
+        if BEGIN:
+        
             track_counter += 1
-            if trackinfo['second'] == 0:
-                if trackinfo['minute'] >= 1:
-                    trackinfo['minute'] -= 1
-                    trackinfo['second'] = 60
-                else:
-                    trackinfo['minute'] = 0
-                    trackinfo['second'] = 0
-            trackinfo['second'] -= 2
-            cuefile.write("  TRACK %02d %s\r\n" \
-                  "    INDEX %02d %02d:%02d:%02d\r\n" % (track_counter,
-                                               "MODE1/2352" if tracktype == '0x04' else 'AUDIO',
-                                               trackindex,
-                                               trackinfo['minute'],
-                                               trackinfo['second'],
-                                               trackinfo['frame'],))
+            
+            if track_counter == 1:
+                cuefile.write("  TRACK 01 MODE1/2352\n" \
+                              "    INDEX 01 00:00:00\n")
+            else:
+                index0 = timedelta(minutes=trackinfo['minute'],seconds=trackinfo['second']) - timedelta(seconds=4)                  
+                index0_m = int(index0.seconds/60)
+                index0_s = int(index0.seconds - index0_m*60)
+                
+                index1 = timedelta(minutes=trackinfo['minute'],seconds=trackinfo['second']) - timedelta(seconds=2)                  
+                index1_m = int(index1.seconds/60)
+                index1_s = int(index1.seconds - index1_m*60)
+                
+                cuefile.write(
+                f"""  TRACK {track_counter} AUDIO\n"""
+                f"""    INDEX 00 {index0_m:02}:{index0_s:02}:{trackinfo['frame']:0>2}\n"""
+                f"""    INDEX 01 {index1_m:02}:{index1_s:02}:{trackinfo['frame']:0>2}\n"""
+                )
 
     cuefile.close()
 if __name__ == '__main__':