Android: Detect another application has started playing audio

Question

My music application constantly plays music in the background, however I\'d like to be able to detect when another application starts playing audio (such as the YouTube app)

Answer 1

http://developer.android.com/reference/android/media/AudioManager.OnAudioFocusChangeListener.html

this thread also has additional information that might get you heading in the right direction.

http://groups.google.com/group/android-developers/browse_thread/thread/db6822d84feaac6/219d8cba07795c61?hl=en&lnk=gst&q=OnAudioFocusChangeListener#219d8cba07795c61