sound keeps going, after 2mins or could be 30mins.Sound just goes off.
This is a brand new tablet, am I doing something wrong?
I have 7 days to return it as faulty, has anyone else had this proble?

seems like a hardware issue. if i were you, i'd return it and get another one. where did you buy it from?

If it's brand new, you actually have 1 year to return it for repairs or a replacement.

Like Jamesc says, that does sound like a faulty tablet and you should probably return it.

I assume you haven't attached headphones or a Bluetooth headset, or anything like that? As far as I know, they're the only things that can switch the sound off suddenly.

I routinely listen to mp3s and radio on my N800 for hours on end. Unless you are talking about problems with listening to sound from some specific site, you have a special problem with your whateveryouhave.