Western Digital TV LIVE User Manual page 179

Options include:
Stereo (Analog, S/PDIF, HDMI)
This is the default setting that decodes all audio streams into 2-channel output via
analog (RCA connectors), S/PDIF (optical connector), or HDMI. Recommended if
you are using a 2- or 4-speaker entertainment unit.
Digital Pass Through via Optical Only
Select this option if you are using HDMI for video and a S/PDIF (optical) connection
to output multichannel surround sound to a receiver and do not want audio output
from HDMI. After selecting Digital Pass Through via Optical Only, select one or
more of the following options that describe your receiver, then press OK after each
selection. Press then, with the
AAC capable receiver
Dolby Digital capable receiver
DTS capable receiver
WMA Pro capable receiver
Digital Pass Through via HDMI Only
Select this option if you are only using an HDMI connection to output multichannel
surround sound to a receiver. After selecting Digital Pass Through via HDMI Only,
select Auto Detect to have the media player detect receiver settings automatically.
Or, select Manual Setup.
(S/PDIF)
selected, press OK again.
(HDMI)
SETUP AND ADVANCED FEATURES – 174
WD TV Live Streaming Media Player
User Manual