Protracker datatype, using AHI version 2 or later.

Oh, by the way...  This is a hack.  It seem to work, but I have no official
documentation for datatypes at all so there may be errors.  In fact, it
probably is.  Let me know of any problems.

If anybody thinks that this was a cool idea, and wish to make a proper
music superclass, have a look at XModule on Aminet first.  I think that
could be a good start.

To install, do this:

copy Classes/Datatypes/protracker.datatype TO SYS:Classes/Datatypes
copy Devs/DataTypes/Protracker#? TO Devs:DataTypes
AddDataTypes Devs:DataTypes/Protracker

You can also edit the file ENV/DataTypes/Protracker and copy it to
ENV:DataTypes/Protracker

The first number is the desired audio mode, in *decimal*, and the second is
the mixing frequency.  If any number is 0, or the file does not exists, the
defaults will be used (that's the "Music unit" settings in the AHI
preferences program).

History

1.12    Fixed a problem with the filesave driver (would lock up Intuition).
1.13    I forgot to handle the GM_GOINACTIVE method. Fixed.
1.14	Undid the last change. What a screw-up!
1.15	Fixed lockup problem with sound.datatype v44 and above (fixed by
	Stephan Rupprecht <info@stephan-rupprecht.de>).

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 4170    7280  57.3% -lh5- f304 Feb 24  2002 ProtrackerDT/Classes/Datatypes/protracker.datatype
[generic]                  194     246  78.9% -lh5- d0dc Aug  8  1998 ProtrackerDT/Devs/DataTypes/Protracker
[generic]                  290     473  61.3% -lh5- 44cc Oct 13  1996 ProtrackerDT/Devs/DataTypes/Protracker.info
[generic]                    3       3 100.0% -lh0- db19 Jul  2  1997 ProtrackerDT/ENV/DataTypes/Protracker
[generic]                  287     643  44.6% -lh5- 83fd Apr 29  1997 ProtrackerDT/Install
[generic]                  359     726  49.4% -lh5- b627 Apr 29  1997 ProtrackerDT/Install.info
[generic]                  785    1425  55.1% -lh5- bfb1 Feb 24  2002 ProtrackerDT/ProtrackerDT.readme
[generic]                  226     468  48.3% -lh5- bb06 Apr 29  1997 ProtrackerDT/ProtrackerDT.readme.info
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         8 files    6314   11264  56.1%            Feb 25  2002