Converting .mp3 audio to .au format.
Converting MP3 Audio Files directly to Audacity Audio Files (.mp3 to .au conversion) is certainly possible and quite straightforward.
Several modern multimedia editing programs and conversion tools, such as Audacity or Freemake Converter, allow users to easily convert .mp3 to .au.
Alternatively, you can will find some online conversion solutions.
A free, open source software for recording and editing sounds
One of the most popular and successful free video conversion softwares
Audio converter for Mac
An audio editing software for Windows and Mac