MTM to AU - Online Audio Converter

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

Convert MTM to AU

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

Output format

AU (PCM 16-bit)

Mode[i]

Simple Advanced

Quality[i]

Sample Rate[i]

Channels[i]

About MTM to AU

Convert MTM to AU. MTM (MultiTracker) sequences 32-channel DOS-era compositions. AU is Sun's simple container, usually holding 8 kHz telephony audio. Headers are minimal; verify sample rate after conversion..

Why convert MTM to AU?

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

MTM vs AU

Codec	MTM	PCM 16-bit
Compression	sequence	uncompressed
Sample behavior	Note events - no audio samples	Full quality kept
Typical use	MTM (MultiTracker) sequences 32-channel DOS-era compositions.	AU is Sun's simple container, usually holding 8 kHz telephony audio.

When not to convert MTM to AU

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

Limits

Starting point: MTM - MTM (MultiTracker) sequences 32-channel DOS-era compositions. Old 32-channel layouts may fold down; check the mix. Headers are minimal; verify sample rate after conversion. Encode AU (PCM 16-bit) from MTM 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 MTM to AU?

Drop your MTM 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.