By tablet PC I assume you mean this:
If you want to browse, listen to music and play simple games, why a tablet PC?
Those are usually targeted at business users or students, since you can use the swivel screen to take notes with the digitizer.
You're probably better off using a netbook in your case.
I have the laptop pictured above, the Toshiba Portégé M200. I'm looking to sell it. It needs a new keyboard (the Shift key randomly presses itself), otherwise it's running perfectly.
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Or do you mean something like this Archos tablet?