The Xoom may have gotten a slight software update last night to prepare it for its long-awaited Flash playing capabilities, but some of the folks over at SlateDroid have an even more impressive -- though much less official -- update, bringing USB host functionality to Moto's slate. Tinkerer-extraordinaire roebeet is the man to thank, granting Xoom owners the ability to read media from USB drives, essentially giving you a limitless amount of storage