I cannot add music to my droid. I have connected my phone to my computer (via USB). I have dragged the 'USB connected' down from the top, tapped 'mount'. Phone states Preparing SD, at the top bar. I opened my 'Windows Media Player', went to 'My Computer' and there is no access to my droid. In my computer it states 'Removable Disc D'--when I open this I receive message to insert disc into computer. Do I need to download some software on my computer? If so, do you know where I can find this software? Thanks in advance!