Hi SImon,
Go to:
http://www.mega-nerd.com/libsndfile/
and download the latest version. Then, from the command line:
cd /path/to/libsndfile
./configure
make
sudo make install
Then it should run. There are a few changes to SC source, and once
they are updated (and once sourceforge comes back on-line) I will
do another build that takes care of this problem. Sorry for the
hassle.
Josh
p.s. This will only work if you have the Dev tools installed. If
you are trying to avoid that, let me know and I can put up a binary
of libsndfile and tell you where to put it.