my main computer i use my touch on is my laptop at home. i am away from home and won't be back for a couple days. my touch ran out of battery so i charged it on my friends computer. i plugged it in and went out. when i came back i ejected the touch and all my songs and videos are gone. i have no music or videos at all on my touch. is there a way that i can get back the songs i had on my touch back? can i sync at home or do i need to retrieve some kind of back up folder/files on my laptop. how can i get my songs and videos back?