I used to have this litttle annoying problems but it stopped after I
updated my Sound drivers

Might work for you


--
Clevo

___________________________
Windows Vista Home Premium x64 + SP1
ASUS P5K MB
Intel Core2 Quad Q6600 @ 2.4GHz
4GB RAM (DDR2)
NVIDIA GeForce 8600 GTS
Realtek HD onboard sound

Helpful links:
http://windowshelp.microsoft.com/Win...91033.mspx#EEE