re: What is the greatest thing to ever happen to music?

I am going to be that guy and say that mp3 format is also one of the worst things to happen to music. Yes, it revolutionized storing it and getting out to the public, but the audio quality is avg when you have very good equipment to listen to. If I enjoy an album enough that I found through file-sharing or iTunes, I will usually buy it on record or CD as well to top notch sound quality.

A very good record player matched with quality separates and speakers is a much better listening experience than mp3s and even CDs.