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AU to WMA Lossless - Online Audio Converter
Convert AU to WMA Lossless online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert AU to WMA Lossless
Drop AU audio here or click to select
AU
WMA Lossless (WMA Lossless)
About AU to WMA Lossless
Convert AU to WMA Lossless. AU is Sun's simple container, usually holding 8 kHz telephony audio. WMA Lossless packs CD audio bit-for-bit inside Windows Media. Few non-Windows players open it; convert FLAC for sharing..
Why convert AU to WMA Lossless?
- Larger files than lossy shares with WMA Lossless lossless quality.
- Keep quality where supported.
- Private, no upload - runs in your browser.
AU vs WMA Lossless
| Codec | PCM 16-bit | WMA Lossless |
|---|---|---|
| Compression | uncompressed | lossless |
| Sample behavior | Full quality kept | Full quality kept |
| Typical use | AU is Sun's simple container, usually holding 8 kHz telephony audio. | WMA Lossless packs CD audio bit-for-bit inside Windows Media. |
When not to convert AU to WMA Lossless
- Skip WMA Lossless for the smallest share: lossless output stays large, so prefer a lossy target when sending AU files.
- Keep a master copy: repeated exports stack small losses, so archive AU before batch WMA Lossless 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. Few non-Windows players open it; convert FLAC for sharing. Encode WMA Lossless (WMA Lossless) 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 Lossless?
Drop your AU file onto this page, choose quality and codec settings, then click Convert. The result downloads as WMA Lossless instantly. All processing runs in your browser.
What codec is used for WMA Lossless?
The default codec for WMA Lossless is WMA Lossless. 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.