Yes, the time stamp is inserted in the file by File History, the type of file is irrelevant; it doesn't change the file, it just adds a date and time in the file name. File History saves personal files, and .mp3 files, along with documents, music files, video files, pictures, any file that was placed on the computer hard drive by the owner.. When the files are restored by File History, the time stamp is removed, but if the file(s) are taken out of File History database, the folder where the files are stored, the time stamp remains.