Hi Scott,
I use the following 2 options
http://www.synthzone.com/ubbs/Forum43/HTML/000003.html

If you just want to hear how a midifile sounds using soundfonts, try synthfont midifile player. From memory, all you need is synthfont, a gm soundfont and a gm midifile to try it with.
http://www.synthfont.com/

best wishes
Rikki
_________________________
best wishes
Rikki 🧸

SX900, P121 Piano, Band in a Box 2020
V Arranger/Ketron SD2