static discharge when changing tracks in foobar

When the tracks change in the play list its fine but when i click to a track or start a play list I get this static sound out of the stereo for a second. Does it on Toslink and Co Ax. Its definatley not static electricity but some thing in the signal path that is gettingin there. I use the onboard digital out on an asus m3n deluxe MB.

Ideas?