Allow preparing preview point without looping

osu.Game/Beatmaps/IWorkingBeatmap.cs

@@ -134,6 +134,6 @@ namespace osu.Game.Beatmaps
         /// <summary>
         /// Reads the correct track restart point from beatmap metadata and sets looping to enabled.
         /// </summary>
-        void PrepareTrackForPreviewLooping();
+        void PrepareTrackForPreview(bool looping);
     }
 }