Amazon just pushed a small, but important update to its Android video app: starting today, users can choose where downloaded files are stored. It sounds insignificant, but for heavy users, this is a really big deal -- until now, Amazon Video would only store content on a device's internal storage, severely limiting how much content one could keep on the device. Not anymore. Now, if you have an SD card, you have room for more movies. The feature is rolling out to customers in the US, UK, Germany, Austria and Japan. It's about time.