This confuses me....I have an EVGA 680i motherboard, so I use onboard sound. I have something plugged into the mic input and the line in, but when I go to Control Panel/Sound/Recording/Properties/Levels (I have Vista) it shows me that the line in and mic are muted...but then when I click unmute, the "apply" button doesn't become highlighted, thus not allowing me to save my changes. I have the newest drivers from EVGA's site. If anyone knows what is going on or has any suggestions, please let me know, I'd really appreciate it.