yeah, if you look online, the TV does in fact have some basic audio inputs, so you can just plug in your standard L/R adaptor to the TV if you want. Since I'm sure the TV only has stereo speakers on it, you really don't need anything more fancy than basic L/R if you want to use the integrated speakers.
But I agree with krotchy - if your spending all that money on a nice TV, i would shell out a bit extra and just buy a nice set of speakers, and you can bypass the whole issue. Personally I think the audio capabilities of HDMI are really only useful when connecting a device to a receiver - hooking it up directly to a high-end TV seems kinda pointless considering you'll be watching a beautiful 1080p picture accompanied by crappy pair of 5-watt stereo speakers.