GstCaps filter issue

[doon]

I trying to create filter using caps:
*		GMainLoop *loop;
		GstElement *pipeline, *source, *demuxer, *decoder,  *typefind, *conv,
*sink;;
		GstBus *bus;
		guint bus_watch_id;


		loop = g_main_loop_new(NULL, FALSE);

		pipeline = gst_pipeline_new ("audio-player");
		source   = gst_element_factory_make ("filesrc",       "file-source");
		typefind = gst_element_factory_make ("typefind", "typefinder");
		demuxer  = gst_element_factory_make ("oggdemux",      "ogg-demuxer");
		decoder  = gst_element_factory_make ("vorbisdec",     "vorbis-decoder");
		conv     = gst_element_factory_make ("audioconvert",  "converter");
		sink     = gst_element_factory_make ("autoaudiosink", "audio-output");

		if (!pipeline || !source || !demuxer || !decoder || !conv || !sink) {
			g_printerr ("Не удалось создать один из элементов конвейера. Работа
приложения завершена.\n");
			return -1;
		}
		g_signal_connect (typefind, "have-type", G_CALLBACK (cb_typefound), loop);
		g_object_set(G_OBJECT(source), "location", name_of_file, NULL);

		bus = gst_pipeline_get_bus(GST_PIPELINE(pipeline));
		bus_watch_id = gst_bus_add_watch(bus, bus_call, loop);
		gst_object_unref(bus);

		gst_bin_add_many(GST_BIN(pipeline), source, typefind, demuxer, decoder,
conv, sink, NULL);

		GstCaps *my_caps = gst_caps_new_simple ("audio/x-raw","rate", G_TYPE_INT,
384,NULL);


		gboolean test=false;
		test = gst_element_link_filtered(source,typefind, my_caps);
		test = gst_element_link(typefind, demuxer);		
		test = gst_element_link_many(decoder, conv,sink, NULL);


		g_signal_connect(demuxer, "pad-added", G_CALLBACK(on_pad_added),
decoder);*

But get error:
*Debug: gsttypefindelement.c(1169): gst_type_find_element_loop ():
/GstPipeline:a
udio-player/GstTypeFindElement:typefinder:
stream stopped, reason not-linked*

Var test == 1 after gst_element_link_filtered(source,typefind, my_caps);
      test == 0 after gst_element_link(typefind, demuxer);
      test == 1 after gst_element_link_many(decoder, conv,sink, NULL);
If I just change gst_element_link_filtered on gst_element_link all going ok
and file plays. 
What am I doing wrong?



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