Hi

One of my colleague has created a powerpoint presentation with audio (he uses Powerpoint 2010 and created a ppsx file). He forwarded to me this presentation by email but I cannot hear any sound when I play it (I uses Office 2007). I sent the file to another computer running Office 2010 and it plays well. Both computers are running Windows 7 as OS. I have extracted the contents of the ppsx file using 7-Zip archive manager and the sounds are found in the media subfolder and they play well with Windows Media Player.
I have also tried to add one of my MP3 in the diaporama, saved with another name and my audio is playing correctly but not the original one.
Is there something to configure into my computer to play correctly this daporama ?