Batch file window closing

Hi I hope this is the right place to post this. I a batch file that makes navigating so much easier. It's a dos window so the UI isn't exactly friendly. When you look at it and try it out for yourself, you'll see that you can select a website without the window closing but when you select and application (provided you have ccleaner, change it to something else if you don't.) the window closes. How can I keep it from closing. Please test any solution you may have. Here is the code

Code:

---

@echo off
color 70
title Selector by Matt Chatterton


:MainMenu
echo ***************************************************************
echo.
echo Selector main menu
echo.
echo ***************************************************************
echo.
echo [1] Site Selector
echo [2] Application Selector
echo [3] Music Selector


set /p udefine=
if %udefine%==1 goto sites
if %udefine%==2 goto apps
if %udefine%==3 goto music


:sites
echo ***************************************************************
echo.
echo Site Selector
echo.
echo ***************************************************************
echo.
echo [1] Google - Search Engine
echo [2] YouTube - Online Videos
echo [3] The Pirate Bay - Torrents
echo [4] Mail.com - eMail
echo.
echo [e] Exit
echo [mm] Main Menu
echo.
echo ***************************************************************
echo Enter the number of the website which you would like to go to:
echo.
set /p udefine=
echo.
echo ***************************************************************
if %udefine%==1 start www.google.com
if %udefine%==2 start www.youtube.com
if %udefine%==3 start www.thepirat****.org
if %udefine%==4 start www.mail.com
if %udefine%==e goto exit
if %udefine%==mm goto MainMenu
goto sites


:apps
echo ***************************************************************
echo.
echo Application Selector
echo.
echo ***************************************************************
echo.
echo [1] CCleaner
echo [2] Rosetta Stone
echo [3]
echo.
echo [e] Exit
echo.
echo ***************************************************************
echo Enter the number of the website which you would like to go to:
echo.
set /p udefine=
echo.
echo ***************************************************************
if %udefine%==1 start ccleaner.exe
if &udefine%==2 start
if &udefine%==3 start
if %udefine%==e goto exit
if %udefine%==mm goto MainMenu
goto apps

:music
echo ***************************************************************
echo.
echo Music Selector
echo.
echo ***************************************************************
echo.
echo [1] Avenged Sevenfold - Nightmare
echo [2] Avenged Sevenfold - Scream
echo [3] Five.Bolt.Main-Bid - Farewell
echo [4] Jen Titus - O Death
echo [5] Pantera - Cowboys From Hell
echo.
echo [e] Exit
echo.
echo ***************************************************************
echo Enter the number of the website which you would like to go to:
echo.
set /p udefine=
echo.
echo ***************************************************************
if %udefine%==1 start O:\Music\Avenged_Sevenfold-Nightmare.mp3
if &udefine%==2 start O:\Music\Avenged_Sevenfold-Scream.mp3
if &udefine%==3 start O:\Music\Five.Bolt.Main-Bid_Farewell.mp3
if &udefine%==4 start O:\Music\Jen_Titus-O_Death.mp3
if &udefine%==5 start O:\Music\Pantera-Cowboys_From_Hell.mp3
if %udefine%==e goto exit
if %udefine%==mm goto MainMenu
goto music

stop

---

Ps some programs won't open like MalwareBytes.

I've used

start mbam.exe
start "" "[target path]\mbam.exe"

and a few other approaches. Perhaps some programs require another command.

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