I try to play a sound from a Raspberry Pi 3 with Raspbian installed. I have mono installed. I tested it on Windows, and it runs well. But when running it on Raspbian. I don't get any error message and no sound either.

public void PlaySound()
        using (var file = new FileStream("example.wav",
            FileMode.Open, FileAccess.Read, FileShare.Read))
            var player = new SoundPlayer(file);
    catch (Exception e)
        Console.WriteLine("Sound failed to play");

Mono version

Mono JIT compiler version 3.2.8 (Debian 3.2.8+dfsg-10)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
TLS:           __thread
SIGSEGV:       normal
Notifications: epoll
Architecture:  armel,vfp+hard
Disabled:      none
Misc:          softdebug
LLVM:          supported, not enabled.
GC:            sgen
  • Have you checked that your Pi plays the wav file using something like omxplayer?
    – goobering
    Feb 26, 2017 at 12:35
  • Yes I do, it works well with aplay or omxplayer Feb 26, 2017 at 12:35
  • SoundPlayer is in System.Windows.Extensions.dll, which means that the class is unlikely to work properly on anything but windows. You can either spawn a process that runs omxplayer (or a similar app) or use a cross platform library such as NetCoreAudio. Jan 18, 2021 at 4:10

1 Answer 1

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
echo "deb http://download.mono-project.com/repo/debian wheezy main" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list

sudo apt-get update
sudo apt-get upgrade

sudo apt-get install mono-complete


sudo apt-get dist-upgrade

if your mono is already installed

This should fix the problem for SoundPlayer in RPI3

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