trackmenu->add_item(new DeleteTracks(mwindow));
trackmenu->add_item(new DeleteFirstTrack(mwindow));
trackmenu->add_item(new DeleteLastTrack(mwindow));
trackmenu->add_item(new ConcatenateTracks(mwindow));
trackmenu->add_item(new AlignTimecodes(mwindow));
trackmenu->add_item(new DeleteTracks(mwindow));
trackmenu->add_item(new DeleteFirstTrack(mwindow));
trackmenu->add_item(new DeleteLastTrack(mwindow));
trackmenu->add_item(new ConcatenateTracks(mwindow));
trackmenu->add_item(new AlignTimecodes(mwindow));