hauppauge tv device

I am attempt to install a Hauppauge TV viewer and have to questions:

1.) I get a picture but no sound with over the air tv stations

2.) What has to be done to enable viewing channels from a spectrum (charter) cable box

Please Help.
Thanks !

I didn't find the right solution from the internet.
References:
- www.computerforum.com/threads/hauppauge-tv-device.242752/
- Marketing Solution Video Examples

I'd recommend asking the people that sold you the TV viewer. ;p