To play the audiograph excerpts you will need a plug-in for your browser which can play MP3 files.
What is MP3?
MP3 is an audio compression format.
How do I download the audiograph excerpts?
Click on the link. You will be given the option to listen while the file is downloading, or to save it on to your desktop.
How do I play an MP3 file?
You will need to have a MP3 player as a plugin for your browser. You can download free players for Macintosh (itunes) and for PCs (WinAmp). For other options consult your favorite search engine.