aud

.audAudacity Project File

Audacity · 2000

Developer
Audacity
Category
Audio
MIME Type
application/x-audacity-project
First Released
2000
Open Format
Yes
File Signature
Not applicable (proprietary project file structure)
At a Glance
.aud
Audacity Project File

An .aud file is a project file used by the Audacity audio editor to save your editing session and history, not the audio data itself.

Reviewed on July 14, 2026
Compression
Varies (data within project, not audio stream)
Transparency
No
Editability
High (within Audacity)
Best for
Saving Audacity projects

Key Features

  • Stores editing history and project settings for Audacity.
  • Enables non-destructive editing and complex undo/redo chains.
  • Links to separately stored audio data files.
  • Facilitates collaborative work on audio projects.

Best For

  • Saving complex audio editing sessions with multiple tracks and effects.
  • Maintaining the ability to undo and redo extensive editing steps.
  • Facilitating collaborative audio production workflows.
  • Projects where non-destructive editing is a priority.

Less Ideal For

  • Directly playing audio, as it's a project file, not an audio file.
  • Sharing audio with users who don't have Audacity installed.
  • Storing raw, unedited audio recordings.
  • Web streaming or embedding directly into websites.

Common Use Cases

  • Saving ongoing audio editing work in Audacity.
  • Archiving multi-track audio projects for later modification.
  • Sharing unfinished audio projects with collaborators using Audacity.
  • Revisiting and refining audio edits made previously.

How to Open It

  1. Open the Audacity application on your computer.
  2. Go to 'File' > 'Open' and navigate to your .aud file.
  3. Alternatively, if Audacity is your default audio editor, you may be able to double-click the .aud file.

What is a .aud file?

The .aud file extension is primarily associated with Audacity, a free and open-source digital audio editor. These files are not raw audio recordings but rather project files that store information about the editing session. This includes details like editing history, effects applied, track arrangements, and pointers to the actual audio data stored separately. Because they are project files, they allow for non-destructive editing within Audacity, meaning you can revisit and change edits without permanently altering the original audio.

Programs That Open .aud Files

PlatformProgram
WindowsAudacityFreeOfficial
macOSAudacityFreeOfficial
LinuxAudacityFreeOfficial

How to Convert .aud Files

FormatMethod
.WAVAudacity (File > Export > Export as WAV)
.MP3Audacity (File > Export > Export as MP3)
.OGGAudacity (File > Export > Export as OGG)

Common Problems with .aud Files

⚠️ Cannot open .aud file on a different computer or with a different editor.
Ensure the recipient has Audacity installed and that all associated audio data files (.aup, WAVs, etc.) are present and in the same location as the .aud project file.
⚠️ .aud file seems corrupted or won't load.
Try opening an older saved version of the project. If it's a recent save, Audacity might have an auto-save recovery option. Ensure you have enough disk space and RAM for Audacity to process the project.

Frequently Asked Questions

Is .aud an audio file?

No, an .aud file is a project file that references audio data. It's not the audio itself, but instructions for how to edit and play the audio within Audacity.

Can I play an .aud file directly like an MP3?

No, .aud files can only be opened and processed by the Audacity software. They are not standard audio playback formats.

What's the difference between .aud and .aup files?

Historically, Audacity used .aup files to store project data. Newer versions often use .aud for project files which may contain or link to other data files. Both serve as project containers, not raw audio.

Technical Details

.aud files are proprietary project files for Audacity. They contain metadata about the audio editing session, including track information, applied effects, and editing commands. The actual audio data is typically stored in separate .aup files or in WAV files, depending on the Audacity version and project settings. This structure enables Audacity's robust undo/redo functionality and non-destructive editing capabilities.

Did You Know?

Audacity, the software that uses .aud files, is one of the most popular free audio editors worldwide.
The .aud format enables Audacity's powerful non-destructive editing, allowing complex undo histories.

Security Information

As .aud files are project files containing editing instructions rather than executable code or embedded media, they generally pose a low security risk. However, always ensure you download Audacity from its official website to avoid bundled malware. Be cautious if opening project files from unknown or untrusted sources.

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