techiehelpme,

I'm sorry to hear that you're having some troubles. I'd like to see if I can help.

1. The audio signal may be compressed. In most cases, however, resetting or freshing (in some cases updating - check with your AT&T customer support to see if one is avaialble) can fix these audio issues.

2. I'm sorry to hear that you're not happy on that point. If there's a specific complaint, I'll be happy to pass that to the appropriate department.

3. It should be reading that there isn't an update. That should change if an update becomes available and it's installed. You can also update with the USB drive, and the current version is 1008.4. If you have that or later, you're up to date. If not, it can be downloaded here:
http://www.samsung.com/us/support/downloads/HT-C6600/XAA

4. You can disable the Anynet+ functionality in both the TV and the HT system, and the CEC (consumer electronic control) options that allow the devices to talk to each other through HDMI will stop communicating.

--HDTech