All Tools
[ audio bench ]
AU to XM - Online Audio Converter
Convert AU to XM online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert AU to XM
Drop AU audio here or click to select
AU
XM (XM)
About AU to XM
Convert AU to XM. AU is Sun's simple container, usually holding 8 kHz telephony audio. XM (FastTracker 2) sequences 32 instruments with envelopes. Volume-column effects vary by engine; audition the render..
Why convert AU to XM?
- Tiny files with XM note events (no audio samples).
- Keep quality where supported.
- Private, no upload - runs in your browser.
AU vs XM
| Codec | PCM 16-bit | XM |
|---|---|---|
| Compression | uncompressed | sequence |
| Sample behavior | Full quality kept | Note events - no audio samples |
| Typical use | AU is Sun's simple container, usually holding 8 kHz telephony audio. | XM (FastTracker 2) sequences 32 instruments with envelopes. |
When not to convert AU to XM
- Skip XM for recorded sound: it stores note events, not audio, so keep the AU recording.
- Keep a master copy: repeated exports stack small losses, so archive AU before batch XM 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. Volume-column effects vary by engine; audition the render. Encode XM (XM) 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.
Related conversions
FAQ
How do I convert AU to XM?
Drop your AU file onto this page, choose quality and codec settings, then click Convert. The result downloads as XM instantly. All processing runs in your browser.
What codec is used for XM?
The default codec for XM is XM. 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.