AU Audio to WINDOWS Media Audio conversion is the process of transforming audio files in the Sun/NeXT AU format into the WMA (Windows Media Audio) format used by Microsoft for efficient playback and streaming. This conversion adapts sample rates, channel maps, and compression parameters so AU content can be played on Windows devices and applications that prefer WMA.
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Read guide →Drag your .AU file from your computer or use the browse function.
Confirm .wma as the selected destination format.
Click "Convert" and download your converted .WMA file once ready.
AU files use the audio/basic MIME type and often employ simple codecs like PCM, mainly for Unix-based sound files. WMA files have the audio/x-ms-wma MIME type and utilize advanced codecs developed by Microsoft to deliver high-quality audio at lower bitrates. WMA is typically used for music streaming, digital audio distribution, and Windows media applications.
The WINDOWS Media Audio (.WMA) format is commonly used for audio. Understanding its characteristics can be helpful when converting to or from other formats like AU Audio.
While specific technical details aren't available here, WINDOWS Media Audio files generally serve the purpose of storing audio effectively within their domain.
Convert your AU Audio files to the widely supported WINDOWS Media Audio (WMA) format quickly and effortlessly with our online converter. Whether you need compatibility with Windows devices or better compression, our tool provides a seamless experience for all your AU to WMA conversion needs.
AU Audio is a simple audio file format primarily used on Unix systems, often resulting in limited compatibility on modern devices. In contrast, WINDOWS Media Audio (WMA) is a proprietary audio format designed for Windows platforms, offering improved compression and better quality retention. WMA is more versatile for everyday media playback and streaming compared to AU files.
Keep individual AU source files under 250 MB for smooth browser-based conversion; desktop or premium tools typically support larger files.
To preserve quality, match the AU sample rate and channel layout (e.g., 44.1 kHz stereo) when choosing WMA settings and prefer higher bitrates or WMA Lossless if available.
For many small files, use batch conversion to maintain consistent settings and save time; verify filename and metadata mapping before start.
Be aware AU often stores raw PCM or mu-law data—some AU variants may require header normalization or decoding, which can affect automated converters.
This converter made switching my AU files to WMA effortless and fast.
James L.
Musician
Improved compatibility with Windows players thanks to this easy AU to WMA tool.
Emily R.
Podcast Producer
Reliable and quick conversion without losing audio quality.
Mark D.
Audio Engineer
Start your free AU to WMA conversion now.
Drag your file here to to upload.
Up to 250MB
If you need editing or precise mastering, convert to a lossless intermediate (WAV or WMA Lossless) before final WMA compression.