I'm on a motorcycle trip around the world. I bought a Galaxy tablet just before leaving home. So I am not very familiar with it or the world of apps.I have a Garmin Nuvi 500 gps that I'm using. I'd like to save the tracks I've recorded. But I can't find a way to download them. I've connected the gps to the tablet with the USB cable and I've connected the SD card through the adapter with no luck. What do I need to do?