How can I output audio to both of my monitors simultaneously in Windows 7?

Solution 1:

Try to use Audio-Router's "Duplicate" function:

Solution 2:

Windows apparently does not support this, but your sound card might.

Since, I have an asus mb I suspect that you have a realtek hd audio sound card, if not I suspect the process is similar. First, you have to get the audio driver from the realtek site if you don't already have, because the windows divers won't support it. Then you have to go to your audio devices and show disabled devices and enable "stereo mix". Go into properties and go to the listen tab and select listen to device which will "listen" for the sound in your main device. Underneath that button their is a menu "playback through this device" and select the second device i.e. your second monitor.

A more low tech solution might just be to buy a audio jack splitter and plug audio jacks from the splitter into both screens.

hope this helps!