A file editing apparatus for revoking (Undo) destructive segmentation. An audio file is segmented into two files by destructive segmentation. When revoking (Undo) operation is performed after segmentation, an end portion of a preceding file is deleted, and a head of a subsequent file is deleted. A copy file, which has been generated by copying during segmentation and preserved, is inserted between the two files to thereby concatenate the preceding file with the subsequent file, whereby an original file is generated.