Atari provided PADCD to conveniently change the sizes of CD-project-trackfiles.

Commandline parameters for PADCD.COM (call PADCD without any parameters to get this info listed):

                     +----------------------------------+
                     ¦ PadCD - CD Track Padding Utility ¦
                     ¦   Copyright (c)1995 Atari Corp.  ¦
                     ¦           Version: 1.0           ¦
                     +----------------------------------+

+----------------------------------------------------------------------------+
¦                                  USAGE                                     ¦
+----------------------------------------------------------------------------+

padcd [-x] [+x] [*x] infile outfile

  -x: Prepend 'x' (hex number) dummy bytes to beginning of outfile.
  +x: Append 'x' (hex number) dummy bytes to end of outfile.
  *x: Ensure file is at least 'x' (hex number) bytes by padding end of outfile.