My husband is backing up with Cabonite. He noticed that his mp3 files in I-tunes were not being backed up so he marked them for back up. Process was taking too long so he stopped process and then noticed that all his mp3's had been converted to mpeg. He is very unset and I do not know how to help him. He has around 6000 files. What is the next step to convert back to mp3's? Is it a file by file convert or can a group of files be converted? Please any help is greatly appreciated.