diff --git a/render_kdenlive.py b/render_kdenlive.py
index 58e68a6..5740b32 100644
--- a/render_kdenlive.py
+++ b/render_kdenlive.py
@@ -19,8 +19,16 @@ class KDEnliveProject:
     def to_xml(self):
         track = self._main_tractor.xpath(".//track")[0]
         duration = max(self._duration.values())
-        track.attrib["in"] = self._sequence.attrib["in"] = self._main_tractor.attrib["in"] = "0"
-        track.attrib["out"] = self._sequence.attrib["out"] = self._main_tractor.attrib["out"] = str(duration - 1)
+        values = {
+            "in": "0",
+            "out": str(duration - 1)
+        }
+        for key, value in values.items():
+            track.attrib[key] = value
+            self._sequence.attrib[key] = value
+            self._main_tractor.attrib[key] = value
+            self._audio_tractor.attrib[key] = value
+
         self._tree.remove(self._sequence)
         self._tree.append(self._sequence)
         self._tree.remove(self._main_bin)
@@ -305,6 +313,7 @@ class KDEnliveProject:
         self._sequence = sequence
         self._main_bin = main_bin
         self._main_tractor = t4
+        self._audio_tractor = t1
         self._v1 = v1
         self._v2 = v2
         self._a1 = a1
@@ -334,7 +343,7 @@ class KDEnliveProject:
             ("kdenlive:clip_type", "0"),
             ("kdenlive:folderid", "-1"),
             ("kdenlive:id", kdenlive_id),
-            ("set.test_audio", "1"),
+            ("set.test_audio", "0"),
             ("set.test_image", "0"),
             ("xml", "was here"),
         ]: