. This driver reads the instructions in the MIDI file and triggers the corresponding instrument samples stored inside Sound On Sound
To understand the Windows soundfont, you need to understand two acronyms: and GS (Roland General Standard) .
The answer is You cannot hack the gm.dls file directly (Windows File Protection will revert changes). Instead, you install a virtual MIDI synthesizer that intercepts MIDI data meant for the default synth and redirects it to a high-quality .sf2 file.
Set the third-party synth as the "Default MIDI Out" device in your MIDI software's settings.