.AUP File Extension

Audacity Project

Developer Audacity
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What is a AUP file?

An AUP file is an audio project created in Audacity, a free audio recording and editing program. It stores project information in the XML standard, including its tracks, clips, and edits. AUP files let users save unfinished projects and continue editing them later.

More Information

Screenshot of a .aup file in Audacity 2.4.2
AUP file open in Audacity 2.4.2

Each AUP file has a corresponding folder with the same project name followed by _data, such as myproject_data for myproject.aup. This folder contains the project's audio data, divided into small chunks stored in Audacity's proprietary AU format. The AUP file and its associated _data folder must remain together for Audacity to open the complete project correctly. When editing is finished, users can export the project as a standard audio file, such as .WAV, .AIFF, .MP3, or .M4A, for playback in other applications.

With the release of Audacity 3.0, the AUP3 format replaced the older AUP format. Audacity 3.0 and later versions can open AUP projects created by compatible earlier versions. When users save these projects in Audacity 3.x, the program converts them to AUP3 format, which Audacity versions earlier than 3.0 cannot open.

How to open a AUP file

You can open an AUP file in Audacity (cross-platform). To do so, select File → Open... from the program's menu bar, and then navigate to and select your AUP file. The project your AUP file represents will then appear in Audacity.

How to convert a AUP file

Audacity can convert AUP files to various file types, including the following formats:

  • .MP3 - MP3 Audio
  • .WAV - WAVE Audio
  • .OGG - Ogg Vorbis Audio
  • .FLAC - Free Lossless Audio Codec
  • .M4A - MPEG-4 Audio
  • .AC3 - Audio Codec 3
  • .AMR - Adaptive Multi-rate Codec
  • .OPUS - Opus Audio
  • .WMA - Windows Media Audio
  • .AIFF - Audio Interchange File Format
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Programs that open AUP files

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