The Art of Equine Auscultation 
$69
A comprehensive and authoritative guide to the identification and interpretation of equine cardiac, respiratory and gastrointestinal sounds. This CD covers heart arrhythmia, murmurs, upper respiratory tract problems, lung disease and gastrointestinal sounds from colicky horses. Each section consists of text, illustrations and recordings of normal and abnormal sounds. Its strongest and most unique feature is movies that play the sound and a simultaneous interpretation. With this you can be sure that you ascribe the correct interpretation to the appropriate sound.
The recordings were made using specially designed stethoscopes and sound capture techniques.
Requires Windows 95 or higher, Windows media player 6 or higher