this->edl = mwindow->edl->get_vwindow_edl(edl_number);
this->edl->Garbage::add_user();
gui->change_source(get_edl(), get_edl()->local_session->clip_title);
this->edl = mwindow->edl->get_vwindow_edl(edl_number);
this->edl->Garbage::add_user();
gui->change_source(get_edl(), get_edl()->local_session->clip_title);