We'll be creating our own audio samples in Chapter 6, Finding and Creating New Noises. We'll need to acquire another piece of open source software to get the recording done.
To start out, I would suggest Audacity: http://audacity.sourceforge.net/
An example of an audio sample is shown as follows:
Audacity is an excellent multi-track open source audio recording and editing platform for Windows, Linux, and OS X. It's easy to use and ridiculously powerful. Here are the best links for the manual, Wiki, and other goodies related to Audacity: