Audio input

Hi everyone,

I am having issues with my audio input on my macbook air laptop.  During a meeting my host can't hear the piano that I'm playing.  I have selected 'original sound for musicians' and ticked 'High-fidelity music mode'.  But the microphone still won't pick up the piano sound.  

I have played around with all of the other settings, restarted the laptop, increased the volume to maximum and nothing fixes the issue.

Thanks,

Sol