Thanks, I too have been wondering about this but just been lazy to try...I'm going to use a nice super small HP 32GB Flash drive my rep gave me I have laying around.
On another note I bought this for my old 60GB iPod which works perfect, been using it 3 mo's so far...can't beat the price!
Amazon.com: BMW Idrive Ipod Iphone Ipad Xtenzi Cable Adapter Usb Aux Mini Cooper Maserati Lead Wire Cord Ref # 61120440796 or 61120440812: Cell Phones & Accessories