GUS669 Unit  v0.2b
  Copyright 1994 Mark Dixon.

  This product is "Learnware".

  All contents of this archive, including source and executables, are the
  intellectual property of the author, Mark Dixon. Use of this product for
  commercial programs, or commercial gain in ANY way, is illegal. Private
  use, or non-commercial use (such as demos, PD games, etc) is allowed,
  provided you give credit to the author for these routines.

  Feel free to make any modifications to these routines, but I would
  appreciate it if you sent me these modifications, so that I can include
  them in the next version of the Gus669 Unit.

  If you wish to use these routines for commercial purposes, then you will
  need a special agreement. Please contact me, Mark Dixon, and we can work
  something out.

  What's "Learnware"? Well, I think I just made it up actually. What i'm
  getting at is that the source code is provided for LEARNING purposes only.
  I'd get really angry if someone ripped off my work and tried to make out
  that they wrote a mod player.

  Beta version? Yes, since the product is still slightly unstable, I feel
  it is right to keep it under beta status until I find and fix a few
  bugs.

  FEATURES
    - Only works with the GUS!
    - 8 channel, 669 music format.
    - That's about it really.
    - Oh, 100% Pascal high level source code = NO ASSEMBLER!
      (So if you want to learn about how to write your own MOD player, this
       should make it easier for you)
    - Tested & compiled with Turbo Pascal v7.0

  BUGS
    - Not yet, give me a chance!
      (If you find any