You need to change the sound recording device and select Stereo Mix. Here's how to do it:
1. In Windows XP, go to Control Panel
-> Sounds and Audio devices
-> Audio tab -> and in the Sound Recording
bounding box click the Volume
button. The "Wave In" window will open.
2. In the window main menu click Options
and select the Recording
radiobutton. Make sure the Stereo Mix
check box is checked and click OK
3. Now in the "Wave In" window select the stereo mix check box as shown:
Try to capture sound again with Remote Utilities.