make the RDFT vissualizatiom default, the scopes are ugly and eat CPU like

piranhas.


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@21646 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

ffplay.c

@@ -2077,7 +2077,7 @@ static int decode_thread(void *arg)
         schedule_refresh(is, 40);
 
         if (!display_disable)
-            is->show_audio = 1;
+            is->show_audio = 2;
     }
 
     if (subtitle_index >= 0) {