power point 2007 Clipart sound issue

[akidosaint]

OS is XP

We have encountered a strange issue with powerpoint not being able to play clipart sounds automatically.

 

On certain machines the powerpoint wont play the sound but sending powerpoint to another machine the powerpoint will play we have tried the normal solutions embedding the sound files and increasing the Max sound file size. We have uninstalled office and ran a repair but still no joy any help would be greatly Appreciated