Convert AU files online for free
The converter easily converts your AU file to various formats - free and online. No Media Player or extra software needed.
The converter also works in reverse, so you can convert other Audio formats to AU with high quality output.
AU files typically represent one of two distinct audio formats, creating frequent confusion for users. Most commonly, these are Audacity Audio Data Blocks. Unlike standard audio files, these are proprietary chunks - usually just six seconds long - generated by Audacity (versions prior to 3.0) to manage large recording projects. They reside in a _data folder and are practically useless individually, as they lack the sequencing information contained in the master AUP file. Attempting to play them individually results in disjointed, out-of-order sound snippets rather than a complete track.
The second common variation is the Sun/NeXT Audio format, a legacy standard introduced by Sun Microsystems. These are standalone audio files often containing μ-law, A-law, or linear PCM data, historically used on Unix systems and the early web. While functional, they suffer from poor compatibility with modern media players like Windows Media Player or mobile devices.
To resolve compatibility issues or recover usable audio:
Use Convert.Guru to open and convert your AU file.
Users also converted VLC, SND, MP3, AUP3, FSB, MIDI, WAV, DTS, FLA, AVS, NZ, US and KM files.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our AU converter.