File Extension Search

.au File Extension

Developer: Sun Microsystems
File type: Audible File
You're here because you have a file that has a file extension ending in .au. Files with the file extension .au can only be launched by certain applications. It's possible that .au files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .au file?

The AU file extension is a data format associated to Sun Microsystems. AU files store the data in three parts: a header (24 bytes), a variable length annotation block, and the actual audio data. These are audio files used primarily on Sun or other Unix-based machines and have been adopted by several audio programs like Adobe Audition, Java and QuickTime. They are uncompressed sound recordings, stored in a different format. They are known as Unix audio files or audible files which are used to embed and play audio files on Web pages. AU files are small and have poor sound quality. They can be converted to MPEG (MP3) or any other audio format like WAV using an audio conversion application such as Cool Music Converter (AudioEditor), Switch (NCH Software) and CyberPower's Free Converter. Files in AU format can be opened with Apple QuickTime Player, RealNetworks RealPlayer and Adobe Audition CS6.

how to open a .au file?

Launch a .au file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .au file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .au files aren't yet associated with it. In this case, when you try to open a .au file, you can tell Windows which application is the correct one for that file. From then on, opening a  .au file will open the correct application. Click here to fix .au file association errors

applications that open a .au file

Apple QuickTime Player

Apple QuickTime Player

Apple QuickTime Player is a multimedia player software that handles a variety of files of different formats from digital photos to panoramic images, audios to videos as well as interactivity. This multimedia player program is available for Mac OS X computers as well as later versions of Windows computers. This software product by Apple has Software Development Kits or SDKs which is available to the public as long as subscribed with the Apple Developer Connection or ADC. It has QuickTime framework, which is compatible with other free player applications, that provide several functions. These include the encoding of audios and videos, transcoding of those same files, decoding with the option to send a decoded stream to graphics subsystem or audio subsystem, and a component plugin architecture to support other codecs (third party like DivX). The latest version of this software is QuickTime Player 7 which is downloadable for free for Mac and Windows computers.
Nullsoft Winamp Media Player 5.6

Nullsoft Winamp Media Player 5.6

Winamp Media Player 5.6 is a popular media player for Windows. This player was developed by Nullsoft and it allows users to play multimedia content such as audio and video. The software not only provides users with all the tools they need to organize their audio and video files but it also allows them to burn and rip CDs and even sync files from mobile devices. Winamp also features a playlist editor that allows users to create and manage their song lists as well as its media library effectively organizes all the audio and video files so that they can be located in one location. This software also has visualization features wherein animated graphics can be displayed along with the music being played. This media player also comes with a customizable user interface wherein users can change skins, as well as it supports not only a large number of file formats but it also supports a lot of user-developed plug ins.
Microsoft Windows Media Player

Microsoft Windows Media Player

Windows Media Player Playlist (WPL) is a computer file format that keeps multimedia playlists for video and audio collections. It is an owned file format utilized in Microsoft Windows Media Player versions 9 to 12. The fundamentals of WPL files are represented in XML format. These .WPL files can be accessed and utilized by the Nullsoft Winamp Media Player 5.6 application version as well as the Roxio Creator 2012 program. WPL files are also known as Windows Media Player playlist files, which are indicated by the Microsoft Windows Media Player or the other media players with support for WPL files as reference data when users open these playlist files and begin to access the content stored in it. The top-level aspect specifies that the file's elements go after the Synchronized Multimedia Integration Language (SMIL) structure. The information contained in these WPL files are directory locations to the video files and audio content chose by the creator of the .WPL file, this enables the media player application to quickly and easily find and play the video and audio content from their directory locations.
Adobe Audition CS6

Adobe Audition CS6

Originally called as Cool Edit Pro, Adobe Audition CS6 is a digital audio workstation software that basically features a multi-track mix and edit environment, waveform editing view and other tools for editing and mixing audio, for effects, and for restoration. It is also bundled with new and advanced features like the real-time clip stretching, control surface support for faster delivery of projects, and automatic speech alignment. Overall, both basic and advanced features can enable a fast editing and mixing of audios as well as videos. Other features include EUCON support for the control surfaces of Avid Artist Series, parameter automation of mixes through write, touch and latch parameter modes, automatic pitch problem correction and adjustment through the Spectral Pitch Display view, Media Browser for importing assets or previewing, Quick Search field, customized templates, expanded output options to mixdown, audio CD or session archive, and high-definition (HD) video playback without transcoding.

a word of warning

Be careful not to rename the extension on .au files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .au. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.

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