Rather than stopping playback (podcasts, music, movie, anything that's playing sound into my earphones), extracting the earphones from my ears, and saying, "What?", I want to "push a button" that pauses the playback, and uses the Android device's microphone to enable me to hear the person. I have an external device, a Shure Push-To-Hear Attachment (SEPTH), but I'd rather use the capabilities that the Android device already has, which would include pausing playback instead of merely silencing playback. I haven't found an application that will do what I'm after, and I'm not even very sure how to search for it. Any suggestions?