I installed a Linkskey 2-port KVM-in-the-cable w/ audio & mic for my XP box (and a second Vista box as soon as I find another power cord & network cable) and everything works fine on the XP box except the mic. I've tried messing with settings under Audio Properties but I can't even get the Sound Recorder to pick up anything. The mic worked fine before setting up the KVM. I need the mic for Skype.
I plugged the mic in directly to the XP box just to verify that it's working, and it still is.