Thanks @Tom. Unfortunately, this didn't work for me: -

~$ fluidsynth -i ./sounds/soundfonts/FluidR3_GM.sf2 -a portaudio
Downloads/example.mid
FluidSynth runtime version 2.1.7
Copyright (C) 2000-2021 Peter Hanappe and others.
Distributed under the LGPL license.
SoundFont(R) is a registered trademark of E-mu Systems, Inc.

||PaMacCore (AUHAL)|| Error on line 1316: err='-66748', msg=Unknown Error
fluidsynth: error: Error opening PortAudio stream: Internal PortAudio error
Failed to create the audio driver


On Sun, Feb 14, 2021 at 3:01 PM Tom M. <tom.m...@googlemail.com> wrote:

> > fluidsynth: error: Error setting the audio callback. Status=-66748
>
> This error is printed when the call to AudioUnitSetProperty failed.
> According to www.osstatus.com the returned error is
> kAudioComponentErr_NotPermitted. I neither know what this error means,
> nor how to fix it.
>
> On the other hand, the CoreAudio driver hasn't received any real changes
> for over 10 years. So it may not work with MacOS 11 at all.
>
> If you just want to get it work, you could simply specify to use portaudio
> or jack as audio driver.
>
> Tom
>
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