Program.cs

using System;
using System.Windows.Forms;
using System.Reflection;

namespace AudioHotkeySoundboard
{
    static class Program
    {
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            // Load NAudio from embedded resources
            AppDomain.CurrentDomain.AssemblyResolve += (sender, args) =>
            {
                string resourceName = new AssemblyName(args.Name).Name + ".dll";
                string resource = Array.Find(typeof(MainForm).Assembly.GetManifestResourceNames(), element => element.EndsWith(resourceName));

                using (var stream = Assembly.GetExecutingAssembly().GetManifestResourceStream(resource))
                {
                    Byte[] assemblyData = new Byte[stream.Length];
                    stream.Read(assemblyData, 0, assemblyData.Length);
                    return Assembly.Load(assemblyData);
                }
            };
            Application.Run(new MainForm());
        }
    }
}