extern int get_sam_file_name(
  char *directory,
  unsigned char *fpos_real,
  unsigned char *fpos_hl,
  unsigned char *fpos_hl_old,
  char *filename);
extern int get_song_file_name(
  char *directory,
  unsigned char *fpos_real,
  unsigned char *fpos_hl,
  unsigned char *fpos_hl_old,
  char *filename);