@King G Thank you for your suggestion. As we are continuously witnessing many masaladesi users delete files after some period of time after generating revenue in ff, which is resulting a hectic job of deleting threads. which is also making masaladesi a spam forum. If we allow that most of the thread here will have a broken link. We started this forum and adopted flash-files only with condition of keeping files for very long period of time. if we allow user to delete files, the purpose of this forum will die.
Though as suggested by you, we can add option of deleting duplicate file in near future.