auz

.auzAudacity Project

Audacity Development Team · 2000

Developer
Audacity Development Team
Category
Audio
MIME Type
audio/x-audacity-project
First Released
2000
Open Format
Yes
File Signature
Typically starts with XML declaration, e.g., <?xml version="1.0" encoding="UTF-8"?>
At a Glance
.auz
Audacity Project

An AUZ file is a project file for the Audacity audio editor that saves your editing session and references separate audio files.

Reviewed on July 15, 2026
Compression
Varies (stores references, actual audio compression depends on source files)
Transparency
No
Editability
High
Best for
Audacity projects

Key Features

  • Stores audio project settings and edits, not raw audio data.
  • References external audio files used in the project.
  • Supports non-destructive editing workflows.
  • Based on a human-readable XML structure.

Best For

  • Saving the state of an audio editing project within Audacity.
  • Maintaining a flexible, non-destructive editing workflow.
  • Organizing multi-track audio projects with specific edits and effects.
  • Facilitating collaboration on audio production.

Less Ideal For

  • Sharing final, playable audio files (e.g., MP3, WAV).
  • Storing audio data directly for playback on media players.
  • Archiving large amounts of audio data without project context.
  • Distributing audio to end-users who do not use Audacity.

Common Use Cases

  • Saving ongoing audio editing sessions in Audacity.
  • Archiving audio projects for future revisions.
  • Collaborating on audio projects by sharing project files and associated audio.
  • Experimenting with different audio effects and arrangements without altering original recordings.

How to Open It

  1. Open Audacity (the official software).
  2. Go to File > Open and navigate to your .auz project file.
  3. Ensure that all original audio files referenced by the .auz file are in their original locations.
  4. Click 'Open' to load your project.

What is a .auz file?

An AUZ file is a project file created by Audacity, a free and open-source digital audio editor. It stores information about your audio editing session, including track details, effects applied, and recording settings, but not the actual audio data itself. Instead, it references the separate audio files used in the project. This allows for non-destructive editing and easy modification of your audio work. When you save your project as an AUZ file, Audacity ensures all your edits and arrangements are preserved for later access and further refinement. It's essential to keep both the AUZ file and its associated audio files together to reopen and continue editing the project.

Programs That Open .auz Files

PlatformProgram
WindowsAudacityFreeOfficial
macOSAudacityFreeOfficial
LinuxAudacityFreeOfficial

How to Convert .auz Files

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

Common Problems with .auz Files

⚠️ Cannot open AUZ file
Ensure you have Audacity installed and that all the original audio files the AUZ project references are still in their original locations and haven't been moved or deleted.
⚠️ Missing audio files when opening AUZ
When prompted, Audacity will attempt to find missing files. You may need to manually locate them through the file browser dialog.

Frequently Asked Questions

Can I play an AUZ file directly?

No, AUZ files are project files for Audacity and cannot be played directly by media players. You must open them within Audacity to access the audio.

What's the difference between AUZ and WAV/MP3?

AUZ files store editing information and project settings, referencing separate audio files. WAV and MP3 files contain the actual audio data ready for playback.

Is an AUZ file the same as the audio project?

An AUZ file is the project file that defines how the audio project is structured and edited. The actual audio data is stored in separate files that the AUZ file links to.

Technical Details

The AUZ format is essentially a plain text XML file. It contains metadata about the audio tracks, including their names, lengths, sample rates, bit depths, and any effects applied. Crucially, it does not contain the audio data itself but rather pointers to the original audio files that Audacity uses. This structure facilitates flexible and non-destructive audio editing.

Did You Know?

AUZ files are primarily XML-based, making them relatively human-readable for technical inspection.
Audacity itself is developed by a community of volunteers and is available on multiple platforms.

Security Information

AUZ files themselves are generally safe as they only contain project data and references. However, always be cautious when downloading any file from the internet, and ensure your source for Audacity software is official to avoid malware.

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