Convert AU to M4A in 3 steps

Convert AU to M4A easily within a few seconds using this free and online tool. Our converter has no file size limitations, and conversions are keeping all data from the original audio file. Choose your documents and convert any audio from AU to M4A.

How to convert AU to M4A in 3 steps

Our goal was to create a simple but efficient AU to M4A online converter. That's why we decided to make it so easy to use. All it takes to convert every file is a three-step process.

Upload AU file

STEP 1

Upload your AU file in the upload box using a 'drag and drop' method or add a link of a document you want to convert.

Converting AU to M4A

STEP 2

After uploading an audio file, press the 'Start conversion' button and wait a few moments for conversion to be finished.

Download converted M4A file

STEP 3

The only thing left for you to do is to download all converted M4A audio files to your computer.

AU Converter

What is a AU file?

This type of file represents a simple audio file that was primarily common on NeXT systems and early Web pages. The AU file format was, at first, used by Sun or some similar Unix-based machine, but now, it can be opened with other audio programs as well. To reproduce this file format, you can use Nullsoft Winamp, Apple QuickTime Player, Microsoft Windows Media Player, RealNetworks, RealPlayer Cloud, or Adobe Audition CC. Although AU files are quite small and have poor sound quality, they store information in three sections. The first one is called header, with a maximum of 24 bytes. Next, there’s a variable-length annotation block. And last but not least, there’s the audio data itself.

M4A Converter

What is a M4A file?

An audio file encoded with advanced audio coding, known as AAC, is called M4A or MPEG-4 audio file. Apple’s iTunes Store uses this file extension as the format of song downloads for storing audiobook content and digital music. This type of file format is unprotected, and protected ones are usually saved in M4P format. The key feature of every M4A file extension is that the quality of this audio is better, and file sizes smaller compared to MP3 files. In case you are wondering, programs that open M4A files include iTunes, Quicktime, Windows Media Player, Roxio Popcorn, Toast, and Creator. Also, it’s good to know that some media players will only play M4A format when it’s renamed to MP4.

AU to M4A conversion is not quite convenient for you? Never mind, there are plenty of formats for you to choose from.

AU TO AAC, AU TO AC3, AU TO AIF, AU TO AIFC, AU TO AIFF, AU TO AMR, AU TO CAF, AU TO FLAC, AU TO M4A, AU TO M4B, AU TO MP3, AU TO OGA, AU TO SFARK, AU TO VOC, AU TO WAV, AU TO WEBA, AU TO WMA and AU TO AU.

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