I have no answer as yet but have experienced the same problem IE no sound, as you have although the video pictures are fine. I noticed after first installing the software and when i connected the USB to the PC that it came up with an initial error message saying that the sound drivers had not installed. I tried to reinstall the software but his isn't easy and no success as yet. I will try to e-mail their tech support for guidance on how to reinstall the sound drivers but it seems likely that the failure to install the sound drivers in the first place is the problem. If you have had any sucess on this please respond
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