Life Is But A Stream: Amazon launched Music Unlimited today (10/12), an on-demand streaming music service. In addition to its song catalog, the service touts hand-curated playlists and personalized stations, as well as compatibility with the company's Echo device and voice-activated "assistant" Alexa, which can be used to find songs by using a few lyrics. Prices range from $3.99/month for Echo subscribers to $7.99/month for Prime members and $9.99/month for non-members. More here.