UMX to AU - Online Audio Converter

Convert UMX to AU online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert UMX to AU

[+] Drop UMX audio here or click to select UMX

Output format

AU (PCM 16-bit)

Mode[i]

Simple Advanced

Quality[i]

Sample Rate[i]

Channels[i]

About UMX to AU

Convert UMX to AU. UMX wraps tracker music for Unreal-engine game levels. AU is Sun's simple container, usually holding 8 kHz telephony audio. Headers are minimal; verify sample rate after conversion..

Why convert UMX to AU?

Larger files than lossy shares with AU uncompressed quality.
Keep quality where supported.
Private, no upload - runs in your browser.

UMX vs AU

Codec	UMX	PCM 16-bit
Compression	sequence	uncompressed
Sample behavior	Note events - no audio samples	Full quality kept
Typical use	UMX wraps tracker music for Unreal-engine game levels.	AU is Sun's simple container, usually holding 8 kHz telephony audio.

When not to convert UMX to AU

Skip AU for the smallest share: lossless output stays large, so prefer a lossy target when sending UMX files.
Keep a master copy: repeated exports stack small losses, so archive UMX before batch AU shares.

Limits

Starting point: UMX - UMX wraps tracker music for Unreal-engine game levels. Game containers may bundle several songs; convert each separately. Headers are minimal; verify sample rate after conversion. Encode AU (PCM 16-bit) from UMX 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 UMX to AU?

Drop your UMX file onto this page, choose quality and codec settings, then click Convert. The result downloads as AU instantly. All processing runs in your browser.

What codec is used for AU?

The default codec for AU is PCM 16-bit. 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.