Audio Conversion
Convert AU to WMA Online — Free
Fast, free AU to WMA converter. No registration required.
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How to Convert
1
Upload your .au file by dragging it into the upload area or clicking to browse.
2
Choose your output settings. The default settings work great for most files.
3
Click Convert and download your .wma file when it's ready.
What is AU?
AU is an audio format created by Sun Microsystems. It's one of the oldest digital audio formats, commonly used on Unix and Java platforms.
Format Details
- Full Name
- Sun Microsystems Audio
- Extension
- .au
Key Features
- Unix standard
- Java audio
- Simple format
- Legacy support
What is WMA?
WMA is an audio format developed by Microsoft. It offers good compression and is commonly used in Windows environments.
Format Details
- Full Name
- Windows Media Audio
- Extension
- .wma
Key Features
- Windows native
- Good compression
- DRM support
- Streaming capable
AU vs WMA
| Feature | AU | WMA |
|---|---|---|
| Full Name | Sun Microsystems Audio | Windows Media Audio |
| Extension | .au | .wma |
| Best For | Unix standard | Windows native |
Frequently Asked Questions
Converting between lossless formats preserves perfect quality. When converting to lossy formats, our optimized encoding minimizes any audible difference. You can adjust bitrate to control quality vs. file size.
We preserve ID3 tags, album art, and metadata when both AU and WMA support them. Some metadata may not transfer between incompatible formats.
Pro users can batch convert multiple audio files simultaneously. Free users convert one file at a time with up to 5 free conversions per day.
We support all standard sample rates from 8kHz (voice) up to 192kHz (studio quality). The default preserves your source file's sample rate.
Yes. Our audio converter handles music, podcasts, voice memos, and audiobook files. For podcasts, we recommend MP3 at 128-192kbps for the best balance of quality and file size.