I need a big flash drive, and I would like to use my ipod touch, but it does not show up anywhere else except for itunes. I thought that I might be able to use my ipod like this because I used to have a second gen ipod shuffle and there was an option to let me use a certain amount of space on it as a flash drive. I would ust plug it into the computer with the syncing cable and it would show up like a flash drive normally would. Does anyone know how to do this with a third gen ipod touch running ios 4?