Index: phonon-gstreamer-4.9.0/gstreamer/backend.cpp
===================================================================
--- phonon-gstreamer-4.9.0.orig/gstreamer/backend.cpp
+++ phonon-gstreamer-4.9.0/gstreamer/backend.cpp
@@ -85,6 +85,8 @@ Backend::Backend(QObject *parent, const
         "--gst-debug-no-color"
     };
 
+    qputenv("GST_PLUGIN_PATH_1_0", GST_PLUGIN_PATH_1_0);
+
     int argc = sizeof(args) / sizeof(*args);
     char **argv = const_cast<char**>(args);
     GError *err = 0;