To run the example clamnetworks you might need to change some processing configuration or, in Linux, just install this wav file at /usr/local/share/clam:

sudo mkdir /usr/local/share/clam
cd /usr/local/share/clam
sudo wget http://clam-project.org/clam_data/trunk/Elvis.wav
sudo wget http://clam-project.org/clam_data/trunk/ElvisStereo.wav