On Wed, 31 Jan 2007, David Cournapeau apparently wrote:
With pyaudiolab, you should be able to read and write most common audio files from and to numpy arrays. The underlying IO operations are done using libsndfile from Erik Castro Lopo (http://www.mega-nerd.com/libsndfile/)
I think it is worth mentioning (on this list) that pyaudiolab uses the SciPy license and libsndfile is LGPL.
Cheers, Alan Isaac