M4P file format
M4P is the Protected AAC File. AAC is the audio layer from the follow-on format to MP3. The .M4P extension is AAC purchased from Apple's Music Store (iTune) and is protected by a Digital Rights Management scheme.
MP3 file format
The MP3 data is the actual audio payload. The diagram shows that the MP3 header consists of a sync word, which is used to identify the beginning of a valid frame. This is followed by a bit indicating that this is the MPEG standard and two bits that indicate that layer 3 is used; hence MPEG-1 Audio Layer 3 or MP3. After this, the values will differ, depending on the MP3 file. ISO/IEC 11172-3 defines the range of values for each section of the header along with the specification of the header. Most MP3 files today contain ID3 metadata, which precedes or follows the MP3 frames; this is also shown in the diagram.
Tag editing functionality is often built-in to MP3 players and editors, but there also exist tag editors dedicated to the purpose
Using NoteBurner M4P to MP3 Conversion tool
NoteBurner Audio Converter is a audio conversion tool, which uses virtual CD burning technology to simulate the burning and ripping process and can convert M4P files to MP3. So NoteBurner is a M4P converter software. This amazing CD burner emulator easily automates the whole workflow for converting protected music or audio files to normal music files: ripping, burning, encoding are within only ONE click. This unique All-in-One feature helps NoteBurner convert any DRM protected WMA, M4P music and M4B, MP3, rax, MP4, WAV, RA, snd, OGG, aif music to unprotected MP3, WAV, WMA formats at fast speed and high quality.
The Interface of NoteBurner
NoteBurner has a clean and simple interface that is easy to learn. When first run, you will be greeted with a startup screen that gives you basic tips on how to get started. At the top of the screen there are four icons to click on that quickly get you to all the features of NoteBurner; incidentally, hovering your mouse pointer over each one displays a tooltip that describes what each icon is for. On the main screen there is a convenient feature where you can click on an icon to launch your default media player. Overall the interface is user-friendly, and efficient to use.
Configuration
The settings menu has a reasonable set of configuration options so that you can tweak how NoteBurner deals with your audio files. You can set the default folder that music is saved to, change audio formats, choose various CBR and VBR encoding bitrates, select ID3 tag versions 1 and 2, and enable NoteBurner to automatically run every time you start Microsoft Windows.
