iOS = for simpletonistic iSheep
Android = for smarter people that like choice

http://www.samsung.com/us/system/consumer/accessory/yp/w1/na/ypw1nawsta/MuseCompatibilityGuide.pdf

Google™ Music:
Today, there is no established way to download .mp3 or any other type of music file onto your device through your phone via the Google Music application. Storing a song for offline listening is not the same as downloading the file. Google may choose to update this in the future, but that option is not currently allowed through their app. To get music purchased via Google Play™ to your Muse, follow the instructions below:
1) Go to https://play.google.com/music on your computer and sign in using your Google Account.
2) Click Songs, Artists, Albums or Genres in the left navigation bar to sort through your music collection.
3) On each song, there is a triangle in the bottom right corner of the cell with the song name. Click the triangle and select download from the drop menu to save the music files to your computer. You can also select multiple songs to download them all at once.
4) Plug your phone into your computer via USB and copy and paste the music file from the location in which you saved your music file(s) on your computer to your device’s “Music” folder in internal storage. You can use Samsung Kies to manage videos, photos, music and more on your computer and sync media with your handset over the air as opposed to via USB Cable.