Ok I just installed a 16g micro sd. when I go to storage it says" sd card "14.83", avail " 14.68". below it says usb storage says " total space 11.36g" , " available 5.34'. Then Device memory 1.76gb. Im so confused. I want to use as little as device mekmory so its fast. Im clueless on what to do, Where does all my music save to? damn these thing s=are complicated.