i am not sure what you mean I need somehting light i can take with me on the go after downloading the shiurim onto the usb stick. The problem is not downloading the shiurim to the usb stick its finding a way to listen to that usb stick
so i need to buy what? a adapter to transfer files from a usb to a micro sd card?
I am getting an impression that you may be best off going to a local electronics store where they can walk you through it.