it will talk to all those PCs, the PS3 I am not sure about, as it is a MS product, I know it works with the xbox.

some discussion on PS3 and HMS here, http://www.avsforum.com/avs-vb/showthread.php?t=959767

and apparently a working solution here, http://www.whsplus.com/2009/04/25/ps3-media-server-for-whs/


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