I have an Acer R231 monitor that have a built in speaker and a 3.5 audio jack labeled AUDIO-IN. So what im trying to do is to have 2 playback devices on my computer which is the realtek and my monitor. I want to plug and external speaker to my monitor but its not working. When im watching movies i want to use my speaker and when im gaming, i want to use my headset. i dont want to keep unplugging my headset and speaker everytime i want to do something. Is there anyway i can use 2 playback devices given that my monitor has only audio in jack?