This may be a silly question from a tablet newbie, but plugging a USB drive stick into the tablet does nothing. Plugging the tablet directly into a PC's USB port does not alert the PC to open it like a storage device that files can be dropped on. I can't open an MP3 file in a URL from the tablet. I have not tried an email attachment. Is the only way to place audio, video, and image files on the tablet to remove the micro SD card, plug it into another device & load it, then reinsert it into the tablet? That feels so 1990s. Am I overlooking anything? A tablet or PC app for this?