as far as i know... there are no legit methods of doing that... if there is a solution to this problem... i'd love to know myself since i'm using iPod touch as well...
apparently iPod touch is the only iPod that doesn't allow users to directly access content in it... must use your own itunes on your own computer to access the data....
i haven't confirmed this yet but i heard that if you use another person's itunes to try to access your own ipod touch data, it wipes your ipod touch clean... i repeat again... i have not yet confirmed whether or not this is true... but anyways... i don't wanna confirm it myself! maybe you could try instead? hehe...