An au file extension is associated with the Unix audio sound file format developed for Unix and Unix-like operating system to store audio data and sounds.
There is one other file type using
the AU file extension!
.au - Audacity audio block
Detailed description
Software that open au file
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What is au file? How to open au files?
The au file extension is also related to UNIX-generated sound files.
Probably very similar to SND, an interchangeable sound file format that is used on Sun, NeXt, and Silicon Graphics computers. The file typically contains raw sound data that is followed by a text identifier.
AU is a sound file format developed by Sun for the Unix platform for use on the Internet. It is known as the Sparc-audio or u-law format.
The default software associated to open au file:

Unix 
Company or developer:
The Open Group
A multi-tasking operating system for various platforms, the first version of UNIX was released in 1969. It is developed by AT&T as well as various commercial vendors, universities and non-profit organizations. Traditional Original Unix systems have characteristics of Version 7 Unix or UNIX System V. Unix Specification have Mac OS X, Mac OS X Server, Solaris, AIX, HP/UX, z/OS etc. Other systems, such as Linux and BSD are called Unix-like or Unix system-like.
Help how to open:
Use compatible media player to playback *.au Unix audio files.
How to convert:
It is likely that audio files in AU format can be converted to other multimedia files using a proper conversion software.
Find conversions from au file:
au to ac3
au to aiff
au to mp3
au to wmv
Find converter to au file type:
flac to au
mp3 to au
wma to au
File identification strings:
HEX code: 2E 73 6E 64 00 00 00
ASCII code: .snd
List of software applications associated to the .au file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open au file, edit au file, convert au file, view au file, play au file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting au files.
Software that open au file - Unix audio sound file format
Programs supporting the exension au on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about WavePad for open au file action.
au file editor and apps that can edit au file - Unix audio sound file format
Programs supporting the exension au on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about WavePad for edit au file action.
au file players - programs that can play au file - Unix audio sound file format
Programs supporting the exension au on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for play au file action.
au file converter - software that convert au file - Unix audio sound file format
Programs supporting the exension au on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Freemake Video Converter for convert au file action.
Software that import au file - Unix audio sound file format
Programs supporting the exension au on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for import au file action.
Applications that export au file - Unix audio sound file format
Programs supporting the exension au on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Tiny Audio Converter for export au file action.
Unspecified and all other actions for computer programs working with au file - Unix audio sound file format
Click on the software link(s) for more information. Suggested software applications use au file type for internal purposes and/or also by different way than common edit or open au file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
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