XML tag file

I am using a WDTV Live v1 with a WHS 2011 server. I am trying to get the WDTV to display genre and actor catagories. I have created .xml files for two of my .mpg movie files. How do I get the WDTV to look at the files? Right now it just shows ‘Unknown Genre’ or ‘Unknown Author’ (Yes, it says Author rather than Actor).

Second question… Is there a list of the .xml tags supported by the WDTV line of products?

This is the contents of one of my .xml files. It has the same name as the .mpg file

<?xml version="1.0" encoding="utf-8"?>
  Abbott and Costello Go to Mars   1953   77   3   Bud Abbott   Comedy   Abbott and Costello

AFAIK the WD TV Live does not support .xml tags, only the LIve Hub and Live Streaming. There is no list for supported .xml tags.