I noticed ifixit does not have the instruction but they are available here http://www.portatronics.com/guide/iPod-Touch-Repair-Guide/ipod-touch-headphone-jack-repair.html does not look like an easy job but doable and will require some soldering to the logic board The jack is available in many places like this http://www.parts4ipods.com/epages/es115703.sf/en_GB/?ObjectPath=/Shops/es115703_shop/Products/TCH1STHDP and here http://www.digiexpress.us/iPod-Touch-1G-Headphone-Jack_p_188.html good luck to you and your ipod