diff --git a/encode.py b/encode.py
index 1bc92bd..dbc9b30 100755
--- a/encode.py
+++ b/encode.py
@@ -5,6 +5,9 @@ import shutil
 import subprocess
 
 for xml in glob('output/*/*.xml'):
+    if xml.endswith('.audio.xml'):
+        continue
+    audio_xml = xml.replace('.xml', '.audio.xml')
     mp4 = xml.replace('.xml', '.mp4')
     pre = mp4 + '.pre.mp4'
     video = mp4 + '.v.mp4'
@@ -14,7 +17,7 @@ for xml in glob('output/*/*.xml'):
             'qmelt', xml, '-consumer', 'avformat:' + video, 'vcodec=libx264', 'strict=-2'
         ])
         subprocess.call([
-            'qmelt', xml, '-consumer', 'avformat:' + audio,
+            'qmelt', audio_xml, '-consumer', 'avformat:' + audio,
         ])
         subprocess.call([
             'ffmpeg', '-y',
diff --git a/render.py b/render.py
index 4f1bb0c..bad53a1 100755
--- a/render.py
+++ b/render.py
@@ -282,6 +282,7 @@ def sequence(seq, letter):
 
     return result
 
+
 if __name__ == '__main__':
     for n in range(10):
         seq = random(n * 1000)
@@ -304,3 +305,4 @@ if __name__ == '__main__':
                 with open(tjson, 'w') as fd:
                     fd.write(current)
                 subprocess.call(['./render_mlt.py', tjson])
+                subprocess.call(['./render_audio.py', tjson])