use Panda audioVolume

direct/src/showbase/SfxPlayer.py

@@ -70,6 +70,8 @@ class SfxPlayer:
                     finalVolume = 1
                 if volume is not None:
                     finalVolume *= volume
+                if node is not None:
+                    finalVolume *= node.getNetAudioVolume()
                 sfx.setVolume(finalVolume)
 
             # dont start over if it's already playing, unless