Weird mp3 player

New mp3 players appear everyday, including clones of Apples' mp3 players like the Shuffle. Nothing new, but iRiver made a remarkable clone, especially the icons of the player are interesting.
Left: iRiver S7
Right: Apple Shuffle

I'm very curious what kind of user research they did to come to the conclusion that these icons suit the best to a mp3 player. There are some other skins available, but well yeah they're not so different.