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AU to WMA - Online Audio Converter
Convert AU to WMA online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert AU to WMA
Drop AU audio here or click to select
AU
WMA (WMA v2)
About AU to WMA
Convert AU to WMA. AU is Sun's simple container, usually holding 8 kHz telephony audio. WMA is Microsoft's audio codec paired with Windows Media workflows. Copy-protected store files cannot be converted; use DRM-free sources..
Why convert AU to WMA?
- Smaller files with WMA lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
AU vs WMA
| Codec | PCM 16-bit | WMA v2 |
|---|---|---|
| Compression | uncompressed | lossy |
| Sample behavior | Full quality kept | Quality set by bitrate |
| Typical use | AU is Sun's simple container, usually holding 8 kHz telephony audio. | WMA is Microsoft's audio codec paired with Windows Media workflows. |
When not to convert AU to WMA
- Skip WMA for archival masters: lossy compression discards detail, so keep the AU original.
- Keep a master copy: repeated exports stack small losses, so archive AU before batch WMA shares.
Limits
Starting point: AU - AU is Sun's simple container, usually holding 8 kHz telephony audio. Headers are minimal; verify sample rate after conversion. Copy-protected store files cannot be converted; use DRM-free sources. Encode WMA (WMA v2) from AU at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
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FAQ
How do I convert AU to WMA?
Drop your AU file onto this page, choose quality and codec settings, then click Convert. The result downloads as WMA instantly. All processing runs in your browser.
What codec is used for WMA?
The default codec for WMA is WMA v2. You can change audio parameters in Advanced mode.
How do you store my files?
We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.