I just got my droid razr after getting rid of my Droid 2. I put a new SD card in it since the one I had in my previous phone was smaller. I hooked the razr up to my computer, docked it and copy/pasted all my music files into a new folder in the removable disk (the new SD card). However, when I go to play the music on the phone later, I get an error message of "couldn't play the track you requested" Please help...