Hi. Is UPnP the same as DLNA? I have Windows 7 PCs and a LG BD570 player that play media just fine from the DNS-320 through SMB but both error out in DLNA mode (the LG BD570 just says network error after a minute of trying to read the catalogue, I guess). I have a WD NAS that also supports DLNA and the same media plays back perfectly on both the Win7 PCs and the BD570