New phone. I wanted to copy my music collection from my computer to my DX. With power charging cable, I connected phone to my computer. I see that there are 8 files on the DX, one is a setup.exe. What is it for? Also, do I just click and drag my music on the DX? Do I create a folder, call it music, and copy all music there? What is the right way to do this so I can use my phone as an mp3 player?