QS300 21/04/00

I have a number of original midi songs, stored on stiffy disks,in yamaha's QS300,
ALLDATA format.
Unfortunately my QS300 and some other gear was stolen. "Curses and karma upon you,whoever you are,brother".
I am running "Cakewalk Express 8", on a "S\B.platinum card",but the computer will not read my midi alldata files.
The QS300 is out of production,and I just cant seem to locate an owner.Is there software that will enable Windows to read,or convert the QS300's alldata format to *.mid.
HELP!Does anybody have an answer?.