handlers.push_back (boost::static_pointer_cast<ElementImportHandler> (region_handler));
handlers.push_back (boost::static_pointer_cast<ElementImportHandler> (pl_handler));
handlers.push_back (HandlerPtr(new UnusedAudioPlaylistImportHandler (tree, target, *region_handler)));
handlers.push_back (HandlerPtr(new AudioTrackImportHandler (tree, target, *pl_handler)));
handlers.push_back (HandlerPtr(new LocationImportHandler (tree, target)));
handlers.push_back (HandlerPtr(new TempoMapImportHandler (tree, target)));
handlers.push_back (boost::static_pointer_cast<ElementImportHandler> (region_handler));
handlers.push_back (boost::static_pointer_cast<ElementImportHandler> (pl_handler));
handlers.push_back (HandlerPtr(new UnusedAudioPlaylistImportHandler (tree, target, *region_handler)));
handlers.push_back (HandlerPtr(new AudioTrackImportHandler (tree, target, *pl_handler)));
handlers.push_back (HandlerPtr(new LocationImportHandler (tree, target)));
handlers.push_back (HandlerPtr(new TempoMapImportHandler (tree, target)));