Terrible audio after enabling wifi on my tv

[sito]

Hi, I used this guide to enable the wifi of my tv, there is emphasized the fact that you can then run the video file, which in my having a C450 could already do, however, gives me the option of having the dlna via wifi.
The guide worked perfectly, but as a side effect I can not get a decent sound, it really feels like crap.
Ok, you hear what they say, you hear the sound, music, speech, but frankly, no, first it felt a lot better.
Is there a way to have an audio better?
Or maybe the same sound settings you had before?

[juusso]

could you take some video (audio?) sample to better understand what you`re talking about?
You could upload file to youtube or to any other host.

[sito]

Tomorrow register with the phone, I have nothing better, I do not get a sound quality, I'll try anyway.

[sito]

I recorded this short audio, there is a person who speaks, and hears the voice of their own as if it came from a box, this is not very natural sound.
recording-20120419-003113.mp3
Not very bad but not that natural as before, even trying to use the equalizer can not get the adio was before.