diff -crB original/pitivi/ui/mainwindow.py new/pitivi/ui/mainwindow.py
*** original/pitivi/ui/mainwindow.py	2010-01-15 16:52:31.675691906 +0000
--- new/pitivi/ui/mainwindow.py	2010-01-15 16:47:04.775692000 +0000
***************
*** 437,442 ****
--- 437,445 ----
          #application icon
          self.set_icon_name("pitivi")
  
+         #pulseaudio 'role' (http://0pointer.de/blog/projects/tagging-audio.html)
+         os.environ["PULSE_PROP_media.role"] = "production"
+ 
      def _connectToSourceList(self):
          # FIXME: projecttabs creates the "components" but then has no API to get
          # them back
