I alsko have a Sony Bravia TV that does not play music or video more than the few seconds with a LS-WSGL/R1.
What is not documented is that apart from the LinkStation's own web-configuration page there is TwonkyVision configuration page in port 9050 (http://LikStation IP-address:9050 an totally open with no security...). TwonkyVision 4.4.8 has no knowledge of Sony Bravia TV's so the problem is that a newer TwonkyVision is needed into the Firmware.
Sony Bravia TV shows up as a "Generic Media Receiver" in the TwonkyVision configuration under the MediaReceivers list. The configuration tool gives a following explanation to the MediaReceiver type:
Lists of media receivers that have contacted the server. For each media receiver, the access to the server can be restricted. Automatic receiver detection does not always work. In this case the server simply assigns "Generic DLNA client" and no client adaptation will take place. Media receivers that are not identified correctly can however be adapted manually by means of the drop down menu above. To delete an entry, please set it to -/-.
I have tried to change the device type from the list to different devices, but with no luck so far. There is definetely an effect since the same mp3 that I try to play will play sometimes longer and sometimes less depending on the device type.
So Buffalo needs to embed a newer version of the TwonkyVision to make the network-disk DLNA compatible with the newer TV sets.