AU (.au)
AU (or .snd) is a simple audio format originally from Sun Microsystems and NeXT, one of the earliest audio formats supported on early internet systems.
Frequently asked questions
What is a .au file?
AU (or .snd) is a simple audio format originally from Sun Microsystems and NeXT, one of the earliest audio formats supported on early internet systems.
What is AU good for?
AU works well for legacy unix/next audio systems.
What are the downsides of AU?
Obsolete for modern use Limited compression efficiency
Can I convert AU in FileLab?
AU isn't yet supported for in-browser conversion here — it typically needs specialized desktop software to open or produce reliably.