The only thing is when I am adding new samples to my library, I play over each one to make sure they are a high enough quality. And if something really catches my ear, I'll add a favorites tag to it as well. So I'm not sure what my sound library would be like today if I didn't do any of that.
"We are focusing on understanding loops and one-shots, as these types of sounds represent the vast majority of what sound designers and musicians are dealing with."
But Beatunes is attempting to do such a thing. Pretty scary UI though ;-)