Help with LM1877N-9 Circuit

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I got a couple of these IC's which I want to use for little PC speakers, 2Watt. I tried to build an amp as given on the datasheet but it does not work. What must I change on this circiut to use it for my application?

Thanx for all help.

Here is complete datasheet: http://www.national.com/ds/LM/LM1877.pdf

Here is specific circiut I tried:
 

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