diff -uNr --exclude='*.orig' --exclude='*.rej' nautilus-2.5.8/configure.in nautilus-2.5.8.patched/configure.in
--- nautilus-2.5.8/configure.in	2004-02-24 14:32:49.000000000 +0100
+++ nautilus-2.5.8.patched/configure.in	2004-03-02 18:08:31.100016816 +0100
@@ -21,6 +21,7 @@
 XML_REQUIRED=2.4.7
 STARTUP_NOTIFICATION_REQUIRED=0.5
 EXIF_REQUIRED=0.5.12
+GSTREAMER_REQUIRED=0.6.0
 
 AC_SUBST(ART_REQUIRED)
 AC_SUBST(BONOBO_ACTIVATION_REQUIRED)
@@ -40,6 +41,7 @@
 AC_SUBST(RSVG_REQUIRED)
 AC_SUBST(XML_REQUIRED)
 AC_SUBST(STARTUP_NOTIFICATION_REQUIRED)
+AC_SUBST(GSTREAMER_REQUIRED)
 
 dnl ===========================================================================
 
@@ -257,6 +259,53 @@
 
 dnl ==========================================================================
 
+dnl gstreamer checking
+
+AC_ARG_ENABLE(gstreamer,
+		AC_HELP_STRING([--enable-gstreamer],[use GStreamer for sound preview]),
+	[case "${enableval}" in
+	yes) ENABLE_GST=yes ;;
+        no)  ENABLE_GST=no ;;
+	*) AC_MSG_ERROR(bad value ${enableval} for --enable-gstreamer) ;;
+	esac],
+	[ENABLE_GST=no]) dnl Default value
+
+AC_MSG_CHECKING(for backend libraries)
+
+if test x$ENABLE_GST = xyes; then
+
+dnl Now we're ready to ask for gstreamer libs and cflags
+dnl And we can also ask for the right version of gstreamer
+	HAVE_GSTREAMER=no
+
+dnl start with 0.7
+	GST_MAJORMINOR=0.8
+	PKG_CHECK_MODULES(GST, \
+			gstreamer-gconf-$GST_MAJORMINOR >= $GSTREAMER_REQUIRED,
+			HAVE_GSTREAMER=yes,HAVE_GSTREAMER=no)
+
+dnl try 0.6
+	if test "x$HAVE_GSTREAMER" = "xno"; then
+		GST_MAJORMINOR=0.6
+		PKG_CHECK_MODULES(GST, \
+			gstreamer-gconf-$GST_MAJORMINOR >= $GSTREAMER_REQUIRED,
+			HAVE_GSTREAMER=yes,HAVE_GSTREAMER=no)
+	fi
+
+dnl Give error and exit if we don't have gstreamer
+	if test "x$HAVE_GSTREAMER" = "xno"; then
+		AC_MSG_ERROR(you need gstreamer development packages installed !)
+	fi
+
+	MM="gstreamer-libs-$GST_MAJORMINOR >= $GSTREAMER_REQUIRED gstreamer-gconf-$GST_MAJORMINOR >= $GSTREAMER_REQUIRED"
+
+	AC_MSG_RESULT(GStreamer)
+	AC_DEFINE(USE_GST_AUDIO_PREVIEW,1,[Define if you want to use the GStreamer media framework])
+
+fi
+
+dnl ==========================================================================
+
 dnl Turn on the additional warnings last, so -Werror doesn't affect other tests.
 
 AC_ARG_ENABLE(more-warnings,
@@ -333,7 +382,7 @@
 AC_SUBST(LIBNAUTILUS_EXTENSION_LIBS)
 
 dnl core nautilus (must list bonobo-activation and libbonobo because idldir does not respect "requires")
-CORE_MODULES="eel-2.0 librsvg-2.0 bonobo-activation-2.0 libbonobo-2.0 libbonoboui-2.0 esound gnome-desktop-2.0 $EXTRA_CORE_MODULES"
+CORE_MODULES="eel-2.0 librsvg-2.0 bonobo-activation-2.0 libbonobo-2.0 libbonoboui-2.0 esound gnome-desktop-2.0 $MM $EXTRA_CORE_MODULES"
 CORE_CFLAGS="`$PKG_CONFIG --cflags $CORE_MODULES` $x_cflags"
 AC_SUBST(CORE_CFLAGS)
 CORE_LIBS="`$PKG_CONFIG --libs $CORE_MODULES` $CDDA_LIBS $LIBJPEG $x_libs"
diff -uNr --exclude='*.orig' --exclude='*.rej' nautilus-2.5.8/src/file-manager/fm-icon-view.c nautilus-2.5.8.patched/src/file-manager/fm-icon-view.c
--- nautilus-2.5.8/src/file-manager/fm-icon-view.c	2004-02-13 11:50:10.000000000 +0100
+++ nautilus-2.5.8.patched/src/file-manager/fm-icon-view.c	2004-03-02 18:12:12.802312944 +0100
@@ -78,8 +78,13 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
+#ifdef USE_GST_AUDIO_PREVIEW
+#include <gst/gst.h>
+#include <gst/gconf/gconf.h>
+#else
 #define USE_OLD_AUDIO_PREVIEW 1
 #define READ_CHUNK_SIZE 16384
+#endif /* USE_GST_AUDIO_PREVIEW */
 
 /* Paths to use when creating & referring to Bonobo menu items */
 #define MENU_PATH_STRETCH_ICON 			"/menu/Edit/Edit Items Placeholder/Stretch"
@@ -193,6 +198,10 @@
 static int preview_sound_auto_value;
 static gboolean gnome_esd_enabled_auto_value;
 
+#ifdef USE_GST_AUDIO_PREVIEW
+static GstElement *thread;
+#endif
+
 static void                 fm_icon_view_set_directory_sort_by                 (FMIconView           *icon_view,
 										NautilusFile         *file,
 										const char           *sort_by);
@@ -1777,6 +1786,22 @@
 	fm_directory_view_stop_batching_selection_changes (FM_DIRECTORY_VIEW (icon_view));
 }
 
+#ifdef USE_GST_AUDIO_PREVIEW
+static void
+gst_end_of_stream_callback (GstElement *src, gpointer callback_data) 
+{
+	FMIconView *icon_view;
+	icon_view = FM_ICON_VIEW (callback_data);
+
+	gst_element_set_state (GST_ELEMENT (thread), GST_STATE_NULL);
+
+	if (icon_view->details->audio_preview_timeout != 0) {
+		g_source_remove (icon_view->details->audio_preview_timeout);
+		icon_view->details->audio_preview_timeout = 0;
+	}
+}
+#endif 
+
 /* handle the preview signal by inspecting the mime type.  For now, we only preview local sound files. */
 
 /* here's the timer task that actually plays the file using mpg123, ogg123 or play. */
@@ -1784,6 +1809,34 @@
 static gboolean
 play_file (gpointer callback_data)
 {
+#ifdef USE_GST_AUDIO_PREVIEW
+	gchar *file_uri;
+	GstElement *filesrc, *decoder, *audiosink;
+	FMIconView *icon_view;
+
+	icon_view = FM_ICON_VIEW (callback_data);
+	file_uri = nautilus_file_get_uri (icon_view->details->audio_preview_file);
+
+	if (file_uri != NULL && gst_init_check (NULL, NULL)) { 
+		thread = gst_thread_new ("thread");
+		filesrc = gst_element_factory_make ("gnomevfssrc", "disk_source");
+		decoder = gst_element_factory_make ("spider", "spider");
+		audiosink = gst_gconf_get_default_audio_sink (); 
+
+		g_object_set (G_OBJECT (filesrc), "location", file_uri, NULL);
+		g_signal_connect (G_OBJECT (filesrc), "eos", G_CALLBACK (gst_end_of_stream_callback), icon_view);
+
+		gst_bin_add_many (GST_BIN (thread), filesrc, decoder, audiosink, NULL);
+		gst_element_link_many (filesrc, decoder, audiosink, NULL);
+
+		gst_element_set_state (GST_ELEMENT (thread), GST_STATE_PLAYING);
+	}
+
+	g_free (file_uri);
+
+	icon_view->details->audio_preview_file = NULL;
+	icon_view->details->audio_preview_timeout = 0;
+#else
 #if USE_OLD_AUDIO_PREVIEW	
 	NautilusFile *file;
 	FMIconView *icon_view;
@@ -1908,6 +1961,7 @@
 	icon_view->details->audio_preview_timeout = 0;
 	icon_view->details->audio_preview_file = NULL;
 #endif
+#endif /* USE_GST_AUDIO_PREVIEW */
 	return FALSE;
 }
 
@@ -1921,7 +1975,22 @@
 
 static void
 preview_audio (FMIconView *icon_view, NautilusFile *file, gboolean start_flag)
-{		
+{
+#ifdef USE_GST_AUDIO_PREVIEW
+	if (thread != NULL) {
+		gst_element_set_state (GST_ELEMENT (thread), GST_STATE_NULL);
+	}
+
+	if (icon_view->details->audio_preview_timeout != 0) {
+		g_source_remove (icon_view->details->audio_preview_timeout);
+		icon_view->details->audio_preview_timeout = 0;
+	}
+
+	if (start_flag) {
+		icon_view->details->audio_preview_file = file;
+		icon_view->details->audio_preview_timeout = g_timeout_add (1000, play_file, icon_view);
+	}
+#else
 	/* Stop current audio playback */
 #if USE_OLD_AUDIO_PREVIEW
 	nautilus_sound_kill_sound ();
@@ -1946,15 +2015,18 @@
 		icon_view->details->audio_preview_timeout = g_timeout_add (1000, play_file, icon_view);
 #endif
 	}
+#endif /* USE_GST_AUDIO_PREVIEW */
 }
 
 static gboolean
 should_preview_sound (NautilusFile *file)
 {
+#ifndef USE_GST_AUDIO_PREVIEW
 	/* Check gnome config sound preference */
 	if (!gnome_esd_enabled_auto_value) {
 		return FALSE;
 	}
+#endif /* USE_GST_AUDIO_PREVIEW */
 
 	/* Check user performance preference */	
 	if (preview_sound_auto_value == NAUTILUS_SPEED_TRADEOFF_NEVER) {
@@ -1985,11 +2057,21 @@
 		mime_type = nautilus_file_get_mime_type (file);
 
 		if ((eel_istr_has_prefix (mime_type, "audio/")
+#ifdef USE_GST_AUDIO_PREVIEW
+		     || eel_istr_has_prefix (mime_type, "application/ogg")
+		     || eel_istr_has_prefix (mime_type, "application/x-ogg")
+		     || eel_istr_has_prefix (mime_type, "application/flac")
+		     || eel_istr_has_prefix (mime_type, "application/x-flac"))
+		    && eel_strcasecmp (mime_type, "audio/x-pn-realaudio") != 0
+		    && eel_strcasecmp (mime_type, "audio/x-mpegurl") != 0
+			) {
+#else
 		     || eel_istr_has_prefix (mime_type, "application/ogg")
 		     || eel_istr_has_prefix (mime_type, "application/x-ogg"))
 		    && eel_strcasecmp (mime_type, "audio/x-pn-realaudio") != 0
 		    && eel_strcasecmp (mime_type, "audio/x-mpegurl") != 0
 		    && nautilus_sound_can_play_sound ()) {
+#endif
 			result = 1;
 			preview_audio (icon_view, file, start_flag);
 		}