Rename completion#songCompletion to completion#song.

common/content/completion.js

@@ -1390,7 +1390,7 @@ function Completion() //{{{
             completion.urls(context, tags);
         },
 
-        songCompletion: function songCompletion(context, args)
+        song: function song(context, args)
         {
             if (args.completeArg == 0)
                 context.completions = getArtists();

xulmus/content/player.js

@@ -109,7 +109,7 @@ function Player() // {{{
             sqncr.playView(mainView, mainView.getIndexForItem(library.getItemsByProperties(customProps).queryElementAt(0,Ci.sbIMediaItem)));
         },
         {
-            completer: function (context, args) completion.songCompletion(context, args)
+            completer: function (context, args) completion.song(context, args)
         });
 } // }}}