Information about NeXT/SUN (.au) sound file
Note: aufinfo will be removed in a future release. Use audioinfo instead.
[m d] = aufinfo(aufile)
m is the string 'Sound (AU) file', if filename is an AU file. Otherwise, it contains an empty string ('').
d is a string that reports the number of samples in the file and the number of channels of audio data. If filename is not an AU file, it contains the string 'Not an AU file'.