I want to apply post-processing to audio from an iPhone user's music library (i.e. iPod application). This can happen in several ways:
- Posting a media player through an audio device.
- Writing a custom audio output device and transferring the media player to it.
- Getting direct access to files in the user's music library.
Are any of these actions possible? I know that they will all be on the desktop, but what about the iPhone?
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