The Amazon MP3 includes both the Amazon MP3 store and Amazon Cloud Player (US-only). Shop for music and play music stored on your device. In the US version, play or download music stored in Amazon Cloud Drive. ABOUT THE AMAZON MP3 STORE AND CLOUD PLAYER (US-ONLY, UK SECTION BELOW). Shop the Amazon MP3 Store on the Go. Shop over 18 million songs and over a million albums in the Amazon MP3 store. Choose to save your purchases directly to Cloud Drive for free or save to your device.