http://elasticsheep.com/2010/04/teensy2-usb-mass-storage-with-an-sd-card/
the teensy is a mini computer, it can be anything the problem is that it has those descriptos by default...
It's evident that here there are only electronic noobs...
I wonder if it's possible to create a program in a PC with Windows and execute it from a Teensy or some kind of USB programable device without the USER interfering (not the noob method of autorun or autoplay).