barrelled,
Several users have noted that they're able to play files easier with an attached storage drive than through streaming, if that's any indication of what I see posted on C|Net. This may have to do with router and network configurations, and unfortunately, I can't determine in those cases why something may or may not be working. The TV officially supports MSC Class devices (like thumb-drives), however, for HDD drives, it can be hit and miss. A powered USB drive is probably going to deliver best results.
Streaming from a Mac may be more difficult, since the DLNA software that is designed for the TV is PC based. The thumbdrive would be the MOST logical device, and HDD drives, therefore, may also work.
Does that help?
--HDTech
Hi recently purchased Series 7 LCD (LA55C750) in Australia. What is the best choice for playing video files?
Option 1 - Get the Samsung LAN adapter and stream directly from my iMac? (Is Wifi able to deliver HD Quality clearly, and does this affect download allowance?)
Option 2 - get a HDD and connect to USB port and play from there?
(Does anyone know which HDD brands are compatible?)
Does anyone know which is better or any issues related with either option?
Thanks

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