# Select a demo. Change to that directory -- the directory name will be <code>~/hello_pi/''nameOfDemo''</code> -- for example, to change to the demo for the hello_audio program: <code>cd ~/hello_pi/hello_audio</code>

# Build the demo: <code>make</code>

# You can modify the programs by editing the C source code (files ending in <code>.c</code>) and recompiling the software by typing <code>make</code>