Send only video to TV, keep audio on PC

I have managed to playback videos to SAMSUNG 40ES6100. On my PC I have a 5.1 surround sound system. Is it possible to only stream the video (I use samsung's AllShare) to TV and keep sound playing on my PC speakers?

Thanks in advance!

I have found a solution which is kind of trivial, but seems to work.
When the movie starts streaming on the TV I also play the movie on my PC so that the sound will output through the speakers.

Now, despite having the problem of syncing the movie on the TV with the one on the PC manually, when I send 3D content to the TV the movie on the tv stucks every few minutes as "Loading". Isn't there a way to make the stream cache larger so that no "Loading..." will pause the movie?

[zip]

the device caches it, it's probably due to your slow connection (wifi?)