This collection is from a website sorry. I had just looked again and seen that I confused the heart, with the lung sounds collection - I haven't yet ripped 2 mp3/wav... I’ll upload later... Steven Lehrer - Understanding Lung Sounds Audio CDs
I remember discovering them in the discounted stock when I was searching for autopsy related media...
In regards 2 the heart sounds, I have used them, and they seem clear I guess (sound quality), not 2 sure on accuracy though (heart sounds)
Here's the link 2 the Heart Sounds collection above: