Now you can skip and replay as much as you want.

But one big name is still missing.

Taking aim at Spotify

Taylor Swift has spurned Spotify and rejected the streaming business model. But that's a losing bet.

Investors lost patience last week, punishing companies like Amazon that aren't generating profits while rewarding those such as Facebook that are delivering on their promise.

Last week, Amazon introduced Prime Music, a streaming service included in a Prime subscription that scared … absolutely none of the big music streaming competitors.