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How to Convert AU to MP3 Easily
by Christine Smith • 2023-06-01 14:12:28 • Proven solutions
At times, you may come across an audio file having.AU extension and find issues with the playback of these files on regular devices. Developed by Sun Microsystems, the AU audio file has limited compatibility, and thus the need to convert it to a more popular format as MP3 arises. Online, desktop, and other programs can be used to convert the files, and below, we have shortlisted the popular AU to MP3 converter tools to get the task done.
- Part 1. What is an AU File
- Part 2. How to Convert AU to MP3 without Any Hassle
- Part 3. 5 Other Useful AU to MP3 Converters
Part 1. What is an AU File
Developed by Sun Microsystems, AU (Audio file) is an audio file with a .au extension that is majorly used by the Internet. These audio files are popularly used by the Sun and other Unix-based machines and can be played using programs like Adobe Audition, QuickTime, Java, and more. An AU file is uncompressed in nature and offers toll-quality sound. The u-Law (mu-Law) is mainly the encoding method by the format.
Since the AU format has a poor sound quality and is not compatible with the majority of the regular devices and players, the need for conversion to a more compatible format like MP3 arises.
Part 2. How to Convert AU to MP3 without Any Hassle
Several tools for converting AU to MP3 are available, but if you are looking for a quality and hassle-free solution, Wondershare UniConverter works as the best method. This desktop-based program supports over 1000 formats and devices for conversion in lossless quality. Batch conversion is supported to process multiple files at a time, and if needed, file parameters can also be edited. The converted files can also be transferred to a host of devices for playback, editing, and other purposes.
Key features of the software:
Wondershare UniConverter - Best Video Converter for Mac/Windows
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Convert AU to MP3 and other popular formats and devices. More than 1000 formats for the conversion supported.
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Batch processing to convert multiple files at a time
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File customization and editing supported using a built-in editor
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Transfer of converted files to a host of devices like iPhone, Android, and more
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Additional features include video recording, download, compression, and others
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Windows and Mac support
Steps to convert AU file to MP3 using Wondershare UniConverter
Step 1 Launch Wondershare UniConverter and add AU files
Download, install and open the software on your system, and from the main interface, select the Audio Converter tab from the left-side panel. On the right side of the window, tap on the add files icon or the + sign to browse and load the AU files from the system. Alternatively, you can also drag and drop the files. Multiple files for batch processing can be added.
Step 2 Choose MP3 at the target format.
After the files are added, expand the Output Format drop-down list at the bottom-left corner and choose MP3 from the Audio list as the desired target format. You can keep the resolution as the source file or select from the available options.
Step 3 Convert AU to MP3
Choose the desktop folder to save the converted file at the File Location tab. Finally, click on the Start All button to start the conversion process. On the software interface, the converted files can be checked from the Finished tab.
Part 3. 5 Other Useful AU to MP3 Converters
An array of other useful tools for converting AU to the MP3 format are available. Check the list of the popular ones below.
1. CloudConvert
Files from the local system, Google Drive, Dropbox, OneDrive, and URL can be added to this tool for AU to the MP3 conversion process. The tool supports trimming the file and also edit its parameters like codec, Qscale, bitrate, and volume. The converted files can be saved to the local system or to cloud storage using this AU converter to MP3 tool.
Pros:
- Add files from multiple sources
- Allows to trim the file and also change the parameters
- Simple and user-friendly interface
Cons:
- Limited output format support
- Internet dependency
2. Convertio
Multiple files up to 100MB can be added to this online AU file to MP3 converter for conversion in decent quality. In addition to the local files, you can even add them from cloud storage. File parameters like codec, bit rate, frequency, channel, and others can be changed using the tool. The processed file can be saved locally or to cloud storage.
Pros:
- Option to add local, online, and cloud storage files
- Allows editing file parameters
- Save files to the local system or cloud storage
Cons:
- A file size restriction of up to 100MB
- Dependent on internet availability
3. ConvertFiles
This is a simple to use online tool that works from the browser and allows converting AU files to MP3 and other popular formats. The tool allows processing one file at a time, and you can download the converted file to your system. There is also an option where get the converted file download link on your email.
Pros:
- A browser-based tool without any need for software download
- Simple interface
- Get the download link of the converted file on an email
Cons:
- Only local files can be converted
- Converts only one file at a time
- No option for file editing.
4. Switch Audio Converter
Compatible with Windows, Mac, and Android devices, this is a desktop-based audio conversion tool that is simple and fast to use. The program supports all popular audio formats for conversion, including AU to MP3. With batch processing, multiple files can be converted at a time, and there is also an option to extract the audio from the other media files. The music tags are preserved during the file conversion process.
Pros:
- Support for a wide range of formats
- Batch processing supported
- Files are normalized automatically during the conversion process
Cons:
- Software downloads and installation is required
- Need to buy the Pro version to get all the features
5. AnyMP4 AU to MP3 Converter
Audio files in all formats like MP3, M4A, AC3, WAV, WMA, AU, and others can be quickly converted using this desktop-based tool. The tool also supports cutting the audio file to remove the unwanted parts and then converting the required one to the desired format. There is an option to extract the audio file from the video using the tool.
Pros:
- Windows and Mac support
- User-friendly interface
- Option to cut the unwanted file parts
Cons:
- The software download is needed
- Additional features are limited in comparison to other tools.
Conclusion
Above, we have listed the popular online and desktop tools for converting AU to MP3. Depending on the number of files you have, the file size, and the additional features needed, you can choose the one that best fits your requirements.
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