Aud extension is related to computer game audio files. You have chance to open aud files with Nice Systems Nice Media Player.
It is compressed audio files which generally used with computer games. You can try to open aud files with Nice Media Player software. However, several game firms develop different kind of file types, in this case it is not guaranteed that can be opened by this program.
Here is the official web page of the software, links below:
What to use aud
NICE Systems NICE Media Player
which page related to aud file
aud Related Searches
You can check related links about aud fileextension.