Annoying automatic screen lock - how to disable?

I received a new iPod Classic 160gb (2009 model) today. I notice that when a song is playing, if the controls aren't touched for a few minutes, a screen lock, which shows a play button and a time clock, will automatically appear and cover the screen until you push the button to disable it.



HOW can I turn this function off? It is unbelievably annoying. When it's on you can't change the volume. Please help!! :confused:



Thanks in advance everybody

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