HDMI is increasingly becoming a popular method of transmitting high-definition video and audio from a source, such as a digital cable box or DVD player to a television. Many computers are now also equipped with an HDMI output, which can be used to send audio, video or both to a source. The HDMI port can also be used to send audio to a playback source, such as a home theater, even if there is no video output. If you do not have an HDMI output on your computer, you can purchase a USB to HDMI converter to send an audio signal via HDMI cable to a device for playback.
Insert the HDMI cable into the HDMI output on the computer. The HDMI output will be located on the side of the computer if it is a laptop, and on the rear of your desktop computer, beside the VGA or DVI output on your video card.
Insert the HDMI cable into the HDMI input on the rear of the playback device.
Set the playback device to the input channel to which the HDMI cable is connected. The computer audio will now be played through the playback device's speakers.