Fix adding sounds to Sound Emitter mods

This was not completely converted to the new ID Property scheme, it
appears. We have to use an intermediate string property so we can have
get/set callbacks. :(

korman/operators/op_sound.py

@@ -44,8 +44,9 @@ class PlasmaSoundOpenOperator(SoundOperator, bpy.types.Operator):
             sound = bpy.data.sounds.load(self.filepath)
 
         # Now do the stanky leg^H^H^H^H^H^H^H^H^H^H deed and put the sound on the mod
+        # NOTE: must use the name so that the mod can receive update callbacks
         dest = eval(self.data_path)
-        setattr(dest, self.sound_property, sound)
+        setattr(dest, self.sound_property, sound.name)
         return {"FINISHED"}
 
     def invoke(self, context, event):
@@ -60,8 +61,7 @@ class PlasmaSoundPackOperator(SoundOperator, bpy.types.Operator):
 
     def execute(self, context):
         soundemit = context.active_object.plasma_modifiers.soundemit
-        sound = bpy.data.sounds.get(soundemit.sounds[soundemit.active_sound_index].sound_data)
+        soundemit.sounds[soundemit.active_sound_index].sound.pack()
-        sound.pack()
         return {"FINISHED"}
 
 
@@ -80,6 +80,5 @@ class PlasmaSoundUnpackOperator(SoundOperator, bpy.types.Operator):
 
     def execute(self, context):
         soundemit = context.active_object.plasma_modifiers.soundemit
-        sound = bpy.data.sounds.get(soundemit.sounds[soundemit.active_sound_index].sound_data)
+        soundemit.sounds[soundemit.active_sound_index].sound.unpack(self.method)
-        sound.unpack(self.method)
         return {"FINISHED"}

korman/ui/modifiers/sound.py

@@ -52,7 +52,7 @@ def soundemit(modifier, layout, context):
         row.prop_search(sound, "sound_data_proxy", bpy.data, "sounds", text="")
         open_op = row.operator("sound.plasma_open", icon="FILESEL", text="")
         open_op.data_path = repr(sound)
-        open_op.sound_property = "sound_data"
+        open_op.sound_property = "sound_data_proxy"
 
         # Pack/Unpack
         data = sound.sound