How do you get Stereo Mix for Sigmatel Audio Systems on a Dell XP?

To enable Stereo Mix on a DELL XP with Sigmatel Audio Systems, right-click the speaker icon in the system tray and select "Recording Devices." If Stereo Mix is not visible, right-click in the window and ensure "Show Disabled Devices" is checked. Once you see Stereo Mix, right-click it and select "Enable." After that, you can set it as the default recording device to capture audio playing through your system.