A method of enabling recorded audio to be associated with a position on a surface. The surface has coded data printed thereon. The coded data is indicative of a plurality of locations on the surface. The method comprises the steps of: (i) interacting with the surface using a handheld audio player incorporating an optical image sensor for reading the coded data and a microphone for recording audio; (ii) reading the coded data; (iii) initiating recording of audio using the handheld audio player; (iv) determining a position of the handheld audio player using the read coded data; and (v) associating audio data with said position.