title: Can an Android app have exclusive access to the audio h/w?
body: <p>I am trying to build an application that will alert the user in case of an emergency by playing an audio file. To override situations where the user may be playing loud music and the emergency announcement may not be heard by the user (due to sharing of audio h/w with multiple apps), can I get exclusive access to audio output so only my audio stream is audible and rest all are stopped/killed/muted?</p>