My friend and mortuary owner was downloading some mp3 funeral services from a usb recorder. A message popped up that asked if he wanted to compress it into Highmat Data format. Accidentally he clicked on yes. The files are there, they have an mp3 extension, but they won't play. Does anyone know how to fix these files. I have tried playing them in a highmat player - the menu comes up with the list of funerals, but it just says the files are damaged and cannot play. Help!