People using IPhone may be impressed by its volume ramping feature. E.g. a telephone call comes in while you are listening to music, the music is gradually volume down until not heard, and then ringtone starts; and after the call is ended, the music is gradually volumed up to the previous level
What is Audio Manager Audio manager is a core component for Moblin, it is able to manage all audio streams, audio applications and audio devices. And it is extendable for any specific hardware platforms.