Google Play = Amazon MP3 Player ?

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http://androidforums.com – I have both Google Play music player and Amazon MP3 Player downloaded on my Spectrum. I know I put Amazon on there, but don't remember putting Google on there (not really relevent?). Anywho, I've only downloaded one album through Google Play, and about a thousand songs through Amazon. Looks like everything (play lists, artists...) is on each app, but if I delete a song off Google, it takes it off Amazon also. Don't know if it matters, as far as storage or battery usage, if I have both apps, but I really don't need/want the Google app. Any ideas? TIA :smokingsomb: (General)