I have a Mikomi DC-7130. I have a Mikomi DC-7130 Webcam with Mic but cannot get any sound when I

Question

I have a Mikomi DC-7130 Webcam with Mic but cannot get any sound when I play back recordings. after re-loading the software twice I now find I cannot play the recorded video back with sound. I am now being told that Windows Media Player does not recognise part of the software needed to play back in it's entirely. It sounds like the microphone part of the device is not being recognized.Please help, I was so pleased to finally get a web-cam and feel so let down and disappointed with this product.Hopefully it's a simple something I am not doing.