This may help
Sound files and photographs are likely to be the main culprits
http://www.technologytrish.co.uk/pptsmallerfiles.html
http://www.pptfaq.com/FAQ00062.htm

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John Wilson
Microsoft Certified Office Specialist
http://www.technologytrish.co.uk/ppttipshome.html
> i want to know how to make a powerpoint with animations and sound, smaller
> before i take it to a website, it is to slow now and it takes a lot of time
> to open it at internet.
>
> thanks Lotte