Hello well I have power point presentation 2007 and I need to insert mpg videos in my presentation. when i inserted it such videos, there is no voice in video. please help me if i can insert mpg video without converted it in avi or wmv file format??????

You're right, it should have worked. I would try to convert it to .wmv though in case something is wrong with that video file. I have had similiar issues with media files not working even though they say they are compatible. These are the compatible formats but mpg is on it.

http://office.microsoft.com/en-gb/po...001230325.aspx

If .wmv doesn't work I would be suprised though.