Quick way to mute Skype on Windows

MuteSkype.ps1

Add-Type @"
  using System;
  using System.Runtime.InteropServices;
  public class Tricks {

    [DllImport("user32.dll")]
    public static extern IntPtr GetForegroundWindow();

    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool SetForegroundWindow(IntPtr hWnd);

}
"@
$wshell = New-Object -ComObject wscript.shell;

# Get currently selected window
$currentWindowHandle = [tricks]::GetForegroundWindow();
$currentWindowProcess = get-process | ? { $_.mainwindowhandle -eq $currentWindowHandle }

# Get Skype
if($wshell.AppActivate('Skype')){
    # Sleep 1;  # Might need this ...
    $wshell.SendKeys("^{m}");  # Send mute chord (CTRL + M)
    $wshell.AppActivate($currentWindowProcess.MainWindowTitle);  # Restore previous window
}