Just noticed this been a while since it has been updated . MAS-Player Version 1.4 AGA experimental [21-FEB-2004]
The software works only with the pro version, but it is possible to use the software with Amithlon. The G10 and G12 version of the mas-chip are supported!.
The link is here
MAS-Player_V1.4_AGA_experimental.ZIP :-)