Problem With Playing Video And mp3

When I Upload a mp3 or Video On My Elgg Its Shows But Can't play In Zaudio or Veeplay, It Shows a Error Message On Zaudio "File Not Found" But Still Its Can be Downloaded , And Veeplay Shows This Error Message "Error #3202"!! I tryed With Both Player , But Some Days Ago It Works Perfectly !! Whats The Problem With Playing ? I'm Using Elgg 1.8.3 Version