NoteBurner iTunes DRM Audio Converter 是一款Mac上实用的iTunes音频格式转换工具，可以转换 Apple Music, M4A, M4B, AA audiobooks, and M4P audio to MP3 or AAC等，简单易用，很不错！
[iTunes DRM Audio Converter 在官网上售价39.95美元，约合人民币240元]
NoteBurner iTunes Audio Converter helps you to convert Apple Music, M4A, M4B, AA audiobooks, and M4P audio to MP3 or AAC. As long as you can play the audio on iTunes, you can convert it. The premise of converting the audio (including Apple Music) is that you are authorized to play the audio with iTunes. It records the audiobooks at 20x speed in the background. iTunes Audio Converter can even batch convert your purchased files. All the ID tags will be preserved in the output AAC files. In this way, you can play your converted audio files off-line on popular devices, such as iPad Pro, iPad mini 4, iPad Air 2, MP3 players, Android devices, Windows devices, and other portable devices.