Problem Statement

Load at least two prerecorded sounds, and demonstrate as many of these features as you can: Describe: [Note: If it seems to be a good idea, this task may be revised to specify a particular timeline rather than just 'demonstrate these features'.] Where applicable, please categorize examples primarily by the audio facility used (library/API/program/platform) rather than the language if the language is incidental (e.g. "Mac OS X CoreAudio" or "mplayer" rather than "C" or "bash").

Let's start with the solution:

#!/usr/bin/sh

# play.sh

# Plays .au files.
# Usage: play.sh 

cat $1 >> /dev/audio # Write file $1 to the speaker's Character Special (/dev/audio).