@echo off
REM Sheep Wizard
REM set the path of nircmd.exe
SET MY_PATH=D:\Documents\nircmd

REM set the name of your two audio devices
SET AUDIO1=Speakers
SET AUDIO2=Headset Earphone

REM give a description for audio devices for pop-up message
SET AUDIO1_DESC=Speakers
SET AUDIO2_DESC=Headphones

REM 1 = display message when audio device is changed   0 = dont
SET MESSAGE=1

IF EXIST "%MY_PATH%\flag.txt" (
     "%MY_PATH%\nircmd.exe" setdefaultsounddevice "%AUDIO1%" 1
     IF %MESSAGE%==1 (
        "%MY_PATH%\nircmd.exe" qboxtop "%AUDIO1_DESC%" "Default Sound Device"
    )
    del "%MY_PATH%\flag.txt"

) ELSE (
    "%MY_PATH%\nircmd.exe" setdefaultsounddevice "%AUDIO2%" 1
    IF %MESSAGE%==1 (
        "%MY_PATH%\nircmd.exe" qboxtop "%AUDIO2_DESC%" "Default Sound Device"
    )
    type nul>"%MY_PATH%\flag.txt"
)