.aup file: how to open it on Windows

2 Windows apps register the .aup extension. Install one of them to open the file with a double-click.

About the format

Format

Audacity Project File

PRONOM identifier

fmt/1823, fmt/1824, fmt/1825

Format data: freedesktop.org shared-mime-info and PRONOM (The National Archives, UK).

• 
  Audacity

  The world’s most popular free software for recording and editing audio.

  Open source 4.0.1.262721353 2.8M ↓ ★ 18.8K
• T
  Tenacity

  An easy-to-use, cross-platform multi-track audio editor/recorder.

  Open source 1.3.5

Related guide: Change the default app for a file type in Windows