> Why couldn't a computer do this?
It already has. From what I understand http://www.predixis.biz/ uses "Machine Listening" to analize a song's waveform and group similar songs togther. The problem is that when it tries to suggest similar songs, it groups everything that sounds exactly the same together. So if you have 15 Radiohead songs in your collection, Predixis will deliver you 15 "similar" Radiohead songs...not exactly interesting.
> Why couldn't a computer do this?
It already has. From what I understand http://www.predixis.biz/ uses "Machine Listening" to analize a song's waveform and group similar songs togther. The problem is that when it tries to suggest similar songs, it groups everything that sounds exactly the same together. So if you have 15 Radiohead songs in your collection, Predixis will deliver you 15 "similar" Radiohead songs...not exactly interesting.