u are prob over driving the MIC-IN
some mic-ins, have a MIC-boost option, in the audio settings turn that OFF
I wouldnt use the MIC-IN, i would get myself a USB AUDIO IN DEVICE
or just move all audio to usb, a usb audigy or something like that
a simple USB AUDIO IN, is dirt cheap, if u use that u need to move the audio acrross devices... so thats the winamp line in plug in...
what are u even using for audio out, the laptops 2 channel audio out?