use libcanberra for beeps

src/fe-gtk/fe-gtk.c

@@ -56,6 +56,10 @@
 #include <gdk/gdkx.h>
 #endif
 
+#ifdef USE_LIBCANBERRA
+#include <canberra-gtk.h>
+#endif
+
 GdkPixmap *channelwin_pix;
 
 
@@ -671,6 +675,12 @@ fe_beep (session *sess)
 			Beep (1000, 50);
 		}
 #else
+#ifdef USE_LIBCANBERRA
+		if (ca_context_play (ca_gtk_context_get (), 0,
+						CA_PROP_APPLICATION_NAME, DISPLAY_NAME,
+						CA_PROP_EVENT_ID, "message-new-instant", NULL) == 0)
+			return;
+#endif
 		gdk_beep ();
 #endif
 	}