Hi! Whenever I plug in my microphone ALONE, without plugging in the headphone jack, my microphone works. But when I plug in my microphone WITH the headphone jack plugged in, the microphone isn't recognized by my computer. It doesn't show up in "recording devices". So to summarize, my microphone will not be recognized when my headphones (the playback device) is plugged in. Does anyone know the cause of this, and how to fix it? Thanks in advance!