Drop file here. 150 MB maximum file size.
Audio file created by Audacity, a free audio editor, uses a proprietary format that can only be opened by Audacity; saved as l' one of the multiple audio data files for an Audacity (.AUD) project.
A M4R file contains a custom iPhone ringtone created with iTunes d' Apple, a multimedia player supplied with Apple devices. It can only be created from a song purchased from the iTunes music store that allows the creation of ringtones. M4R files are transferred automatically to an iPhone when the phone is synchronized with the phone; computer at l' aide d' iTunes d' Apple.
Access powerful and secure free online AU tools to convert, view, edit, merge, split, and compare AU files β all without installing any software. Our tools support the .AU (Audacity Audio File) file extension and run smoothly in any modern browser.
Select a tool below to explore features and manage your AU files directly from your device with ease.
Chose or drag & drop your AU file, click Convert to M4R, and download the M4R file. No registration needed.
Yes, all uploads are encrypted. Your files are auto-deleted after 24 hours.
Yes, our converter retains layout, fonts, and images as accurately as possible.
Fileproinfo converter engine works fast. You can convert AU to M4R in a few seconds to couple of minutes for large size files with complex structure.
FileProInfo support manay file formats that allow you to convert AU to 100s of file formats, without any limit, registration and downloading, 100% free and online AU converter.
All converters in this list are manually verified & 100% free and working properly, however you must use these apps according to their respective terms & conditions.
This tool and page updated at: 12-Apr-2025
About FileProInfo: FileProInfo is a trusted platform dedicated to file formats and software programs. We provide accurate technical details, easy-to-use navigation, and advanced search capabilities to help users explore, manage, and convert file types efficiently.
Listed file converters are from the wide range of online file converter.
These are the most polular file/document converters based on the user's review and usage on the FileProInfo.