Hands-On Sony NEX-6 & 16-50mm OSS images & other E-Mount Lens

Hi Webgeek. Fantastic selection of pictures. I have pre-ordered the NEX-6 & 16-50 pancake lens without checking if an external mike can be fitted. Been through this thread to end and cannot find any mention of this subject. Do you know if an external mike can be fitted and if so which type/model and is an adapter required.  I am basically looking for a solution costing not more than around US$ 150.