I have a problem with NirCMD and it won't let me download it, when I extract the .rar it won't let me open the nircmd.exe file to put the commands. If you could help me install it, it would be of great help to me. Thank you!

Querría saber como puedo hacer para que cuando le de un comando de voz a Alexa suba o baje el volumen dependiendo de lo que le haya dicho. Gracias.