I have a LinkStation PC-P3LWG/DVD which I have used happily for years with a LinkStation HD-LAN and LinkStation HS-DH500. I have added a LinkStation Duo to my network. The LinkTheter still sees and plays media from the two older machines but although the Duo appears on teh list ofdevices, LinkTheater willnot open it to play media. Can anyone tell me what doing wrong.?