At this point, the novelty of music streaming services has largely worn off, but Amazon's business approach could prove interesting. Just as it does with movies and TV shows, the company would likely include music streaming as part your Amazon Prime subscription. And while all of that content may seem like a lot when you factor in Prime's $79 fee, Amazon has recently said it's considering upping the annual cost by as much as $40. Having both music and video at your fingertips could help make a price hike easier to swallow.
