Sound bites running without prompt

After following all the steps you listed(which took several hours btw), it was well worth the wait. The constant interruptions by the annoying audio files appears to have been eradicated completely. I will continue to monitor the situation. But, all good so far.
There were 7 trojans and 1 backdoor found. Along with several hundred cookies that were shown as potential threats. They were all removed.
I'm keeping my fingers crossed. But, I'm encouraged more each day.
Thanks so much.

Trojan infections are nothing to be sneezed at. SUPERAntispyware finding tracking cookies is not really that important; it is nice to know they have been removed, but tracking cookies, in and of themselves, are not inherently malicious.

Glad you made some progress. Suggest you go here to ensure all remnants of any malware infection is completely removed: http://forum.avast.com/index.php If you are running other than Avast! a/v, certified malware experts there do not care if you are running Norton, McAfee, or other, they will assist you just the same, for free.

Suggest using Virus and Worms section and also preparing for assistance there by getting and running programs listed here: http://forum.avast.com/index.php?topic=53253.0

A victim is a victim no matter what a/v they run for real-time protection; the only real alternative to going to Avast! forums if remnants are left over, is to do a clean install of your operating system. You would do this if you want to be sure all malware is gone, but then that will bring up the issue of losing all personal data if this is done.

If all remnants are not removed, a re-infection can occur once again. Please note that some of the tools listed at Avast! can damage your system if run and fixes applied without expert supervision. OTL would be one such; diagnostic logs are all that are asked for at the beginning.

You do backup all your personal files you do not want to lose on a routine basis?