Accidentally save audio files in the AUP format? What is an AUP file? How to convert AUP to MP3? (To convert MP3 to other audio formats, you can use MiniTool Video Converter.) Let’s dive into this post and get the answer.
What Is an AUP File?
An AUP file is an audio project file created by Audacity. It doesn’t contain any actual audio data and can’t be opened with any third-party software. The only way to open an AUP file is by using Audacity.
How to Convert AUP to MP3
Audacity is a free and open-source audio editor that works on Windows, macOS, Linux, and other operating systems. It supports WAV, AIFF, MP3, AU, FLAC, and OGG. It has the ability to convert audio files, edit audio files, and record audio through a microphone.
It’s also an AUP to MP3 converter that can edit and export AUP files as MP3.
Here’s how to convert AUP to MP3 with Audacity.
Step 1. Find the .aup file that you want to convert to MP3.
Step 2. Right-click on the AUP file, choose the Open with… option from the pop-up window, and open it with Audacity.
Step 3. After loading the AUP file, you can continue to edit it as needed.
Step 4. Then, click on File in the menu bar and head to Export > Export as MP3.

Step 5. Select a folder to save the audio file and change the file name, quality, or bitrate mode as required.
Step 6. Finally, press Save to export the AUP to MP3.
The Best MP3 Converters That You Should Try
To convert audio files to MP3, here are two robust MP3 converters: MiniTool Video Converter and Online Converter. They are not AUP to MP3 converters but can handle the most popular audio conversions such as OGG to MP3, MP3 to WMA, M4A to MP3, M4R to MP3, WAV to M4A, and more. Read on for more information.
Option 1: MiniTool Video Converter
MiniTool Video Converter is a free and professional video/audio converter that supports a wide range of video and audio conversions, including but not limited to MOV to MP4, MKV to AVI, M4V to FLV, TS to MP4, WebM to MXF, OGG to MP3, MP3 to AAC, AIFF to OGG, AC3 to WAV, etc. Additionally, this free application offers multiple formats that are compatible with platforms and devices, such as YouTube, Vimeo, Facebook, Apple, Samsung, etc.
More than that, MiniTool Video Converter enables you to customize the output parameters, like frame rate, bitrate, resolution, quality, encoder, etc. It also allows you to batch-convert video & audio files, extract audio tracks from videos, download YouTube videos to MP3/MP4, and record video & audio from computer.
It’s 100% free without hidden costs and has no ads, bundles, or watermarks. Just click the download button below to have a try!
MiniTool Video ConverterClick to Download100%Clean & Safe

Option 2: Online Converter
As its name implies, Online Converter is a web-based file conversion tool that can convert media files online. It supports converting videos, audio files, images, eBooks, and documents. Besides file conversions, Online Converter comes with some video & audio editing features, such as merge, cut, compress, resize, rotate, and so on. However, the uploaded file is limited to 200 MB.
Conclusion
This post gives an ultimate guide on how to convert AUP to MP3 easily. With Audacity, you can convert AUP to MP3 without losing quality in just a few steps. Besides, 2 reliable MP3 converters are recommended to convert MP3 to other files with no effort. Feel free to choose the one you prefer. Hope this article can help you a lot!