Sorry,but, the Soundfont Manager already contains a GM soundset right out of the box. In addition,you can download any soundfonts,including large expensive ones.

Once the software and drivers are installed,you will see Creative. Choose it for midi out.
Bernie
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact