All Things D writes, Today, there are only a couple of ways in which Amazon’s e-commerce and digital businesses overlap. One of the biggest examples is Amazon Prime, which ties two-day shipping with digital perks like access to free streaming video. A more obscure example is how Amazon enables mobile games to bundle the sale of physical toys with virtual goods. Now an even more obvious use case exists: Amazon is announcing “AutoRip,” a new service that will give anyone who has ever purchased a CD on Amazon over the past 15 years a free digital copy of that album. It also applies to all purchases going…