Thanks to those that replied, but it was a stupid error on my part, I have only had the car for a few days, I tried connecting the phone via bluetooth and then playiing a book, but nothing appeared to happen, so I assumed that playing sound on an android phone didn't work. It was only after a lot of messing about today, I managed to get it working. The volume needed changing to max on the audio connection, it could not be heard at the default setting.