The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
You don't say what your OS is. But if it is Vista download the latest Sigmatel driver for Win XP and install it in WinXP SP2 compatibility mode.. you will then have the stereo mix function.