It was was 12 years ago this week--January 9, 2001--that Apple introduce a new music player for Macs. Called iTunes, Steve Jobs promised it would be the best thing ever.
Well, maybe not--it's grown into a pretty bloated piece of software--but it's probably used by more people than any other music player. And let's not forget that the iTune store controls 70% of music retail.
Ars Technica has this fun look back at some of the iterations of iTunes.