Heya, I just bought an ipod touch last friday and.. obviously I am still very noobie at operating it. So.. I am having trouble finding where/how to switch on the internal speaker. It's kindda weird that occasionally when I switch it on, the speaker is automaticallly on, and occasionally it just turns off by itself and I can't find where to have it turn on. The sound was fine when I plug in the earphones though. So please teach me how! Thanks!!