A playback apparatus for playing back a voice data file, wherein the voice data file comprises a plurality of blocks and a file header being management information on the voice data file, the blocks each contain a plurality of sectors and a block header being management information on the block, and the sectors contain voice data and a sector header being management information on the sector, the apparatus comprising:
- calculation means for calculating a playback position from a start position of the voice data file by each block;
- management file creation means for creating a management file for managing a playback position from a start position of the voice data file of each block;
- and
- storage means for storing the management file.