Do not switch on media source automatically

src/mediactl/system.py

@@ -252,7 +252,7 @@ class System(mediactl.WithLogger):
             return {"result": "ok"}
 
         # Request default media for projector (this may also operate the screen motors)
-        await self.switch_media_source(1)
+        # await self.switch_media_source(1)
 
         return {"result": "ok"}