I was wondering if it's possible to hook microphone into 'mic in' and an instrument, stereo, etc. into 'line in' and record both simultaneously? For instance, could you hook up an electric guitar into 'line in' while recording your voice with a mic in 'mic in'? If so, you'd have an instant 2 track recorder... T think this wouyld be an awesome feature if not included already... Any thoughts???