Hi Scott,
I use the following 2 options

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.

best wishes
best wishes
Rikki 🧸

SX900, Kawai es920 piano Band in a Box 2021
V Arranger/Ketron SD2