diff -ur prboom-plus-2.6.2/prboom2/src/SDL/i_sound.c prboom-plus-2.6.2-patched/prboom2/src/SDL/i_sound.c
--- prboom-plus-2.6.2/prboom2/src/SDL/i_sound.c	2022-02-11 05:28:36.000000000 -0500
+++ prboom-plus-2.6.2-patched/prboom2/src/SDL/i_sound.c	2022-06-05 19:22:31.569463446 -0400
@@ -657,6 +657,7 @@
   int audio_channels;
   int audio_buffers;
   SDL_AudioSpec audio;
+  const char *filename;
 
   // haleyjd: the docs say we should do this
   if (SDL_InitSubSystem(SDL_INIT_AUDIO))
@@ -681,6 +682,11 @@
     audio_channels = 2;
     audio_buffers = snd_samplecount * snd_samplerate / 11025;
 
+    if (Mix_Init(MIX_INIT_MID) == 0)
+      lprintf (LO_INFO, "Mix_Init failed\n");
+    filename = I_FindFile2(snd_soundfont, ".sf2");
+    if (Mix_SetSoundFonts(filename) == 0)
+      lprintf (LO_INFO, "Mix_SetSoundFonts failed\n");
     if (Mix_OpenAudioDevice(audio_rate, MIX_DEFAULT_FORMAT, audio_channels, audio_buffers,
                             NULL, SDL_AUDIO_ALLOW_FREQUENCY_CHANGE) < 0)
     {