WINDOWS Media Audio to AU Audio conversion is the process of translating audio data encoded in Microsoft's WMA format into the AU audio container format originally used on Sun/Unix systems. This conversion rewraps and/or re-encodes audio so it can be played by systems and apps that require AU files, preserving as much of the original quality and metadata as possible when settings permit.
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Read guide →Drag your .WMA file from your computer or use the browse function.
Confirm .au as the selected destination format.
Click "Convert" and download your converted .AU file once ready.
WMA files typically use the MIME type audio/x-ms-wma and support codecs designed for Windows Media Player compatibility. AU Audio files use the MIME type audio/basic and are commonly encoded with PCM or μ-law codecs, which provide uncompressed or lightly compressed audio suitable for professional use. The AU format's simplicity makes it ideal for environments requiring reliable audio playback without proprietary restrictions.
The AU Audio (.AU) format is commonly used for audio. Understanding its characteristics can be helpful when converting to or from other formats like WINDOWS Media Audio.
While specific technical details aren't available here, AU Audio files generally serve the purpose of storing audio effectively within their domain.
Our Online WMA to AU Converter offers a simple and efficient way to convert your Windows Media Audio files to AU Audio format. Whether you need better compatibility for audio editing or playback on different devices, this tool ensures high-quality conversion without the need for software installation.
Windows Media Audio (WMA) is a proprietary format developed by Microsoft, primarily used on Windows devices and software. In contrast, AU Audio is a simpler, Unix-based audio format favored in professional audio environments for its straightforward encoding and broad compatibility in such systems. While WMA offers compression efficiency, AU files are often easier to manipulate in audio editing workflows.
Keep individual file sizes under 250 MB for free web conversion services to avoid upload failures; consider splitting very long recordings.
To preserve quality, choose a PCM output with the same or higher bit depth/sample rate as the WMA source; avoid unnecessary downsampling.
Use batch conversion for multiple files, but process in small groups (10–50 files) to reduce memory and upload time issues.
Note format limitation: AU is typically a simple PCM container and may not support WMA-specific metadata or advanced codecs like WMA Pro without re-encoding.
This converter made switching from WMA to AU effortless and fast.
Emily R.
Audio Engineer
Great tool for preparing my audio files for studio use.
Mark D.
Musician
Quick and reliable conversion with no quality loss.
Lisa M.
Podcaster
Start your free WMA to AU conversion now.
Drag your file here to to upload.
Up to 250MB
If you need small file sizes, transcode to compressed audio (e.g., MP3 or AAC) first, then convert to AU only if the target system requires that container.