On a websites that has an option to upload a file (i.e., "Choose File" button), the Android OS will pop up a window allowing you to choose various types of files--music tracks, photos from gallery, etc. It also usually has the ability to capture input from devices, such as camera and microphone. When I click on "Choose File" on my Nexus 7, I see "Choose an action" and have the choices: Camera, Camcorder, Choose music track, Gallery. But where is the choice "Microphone?" I've seen it on other Androids, but is it not available on Nexus 7?