A minor firmware update has been posted on the WDTV site:
http://www.wdc.com/wdproducts/updates/?family=wdfwdtv_liveWhat's new!
Release 1.01.11 (11/16/09)
Added more USB WLAN adaptor support. Click here for list of compatible adaptors.
Added cover art display function when viewing music files in album view.
Added user selectable on/off for fade in and fade out effect while browsing files.
Resolved issue of no audio when there is only a single, center channel audio stream in a video.
How to Install the Product Update:
Extract the three files (.BIN, .VER, and .FFF files) to the root (top level) of a portable USB drive.
Connect the USB drive to the WD TV Live Media Player's USB port.
Press HOME, and then select the Settings bar.
Select the firmware upgrade icon, and then press ENTER.
You are prompted to perform the firmware upgrade.
Select OK on the firmware update prompt, and then press ENTER. This will restart the system.
After restarting, the system automatically enters firmware upgrade mode.
Once the update process is completed, the WD TV Live HD Media Player will restart again.
Once the HD WD TV Live Media Player restarts, the new firmware is automatically loaded and the WD TV Live HD Media Player is ready for use.
I think it's also possible to update via the WDTV network connection itself but no mention of it above....