.AUZ File

The auz file extension is associated with Ableton Live, a music editing, mixing and composition software for Mac and Windows operating system.

It appears that auz file stores data needed for proper upgrading to higher version and acts as some kind of authorization file.

Files with auz file extension can be typically encountered as upgrade authorization files from Ableton Live music composition software.

How to open:

Ableton software uses these files automatically during upgrading to higher version, you cannot access them manually.

How to convert:

You cannot convert *.auz files to anything else, they are used for the upgrade process.