How do I set my computer from headphone sound to stereo sound?

If your desktop is a Win7 system, then in the Control Panel - Hardware and Sound - Realtek High Definition Audio Manager - Speakers - Rear Panel - check the box in front of "Rear Speaker Output" then the sound will come out. Rear Speaker Output" check box in front of the stereo sound. If the front panel of the "headset" in front of the check box, it is the headset out of the sound, choose a separate option will not be the same time out of the sound, in addition to the bottom right corner of the screen in the trumpet right-click, volume control options in the device selection of speakers or headset devices.

WinXP system control panel inside the Realtek High Definition Audio Configuration can also set the front panel or rear panel audio output.