I agree with the advantages of DLNA.
When I got my WDTVLive unit I did only 3 things in Vista Home Premium to get my movies on HDD to show on my TV:
-
shared the MOVIES folder on my HDD
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enabled/started-made automatic the media sharing service
-
did an automatic network setup on my WDTVLive
It took all of 5 minutes to watch my first movie on my TV via the WDTVLive box.