Picked up my X5 35d on Friday...I want to add my music to the system. I formatted the USB drive in FAT(Windows) added my music. I then plugged the USB thumb drive into the USB slot in the glove compartment. Doesn't do anything. Doesn't show up. I did read the manual, I tried to find it to add the MP3's to the library. No dice. Does anyone know which brand and memory size USB drive works ?