Many Many Thanks.  I have tried to do that. But the problem is poser is accepting only one sound file. In My animation I have 4 Poser files with same Characters and props with different animations and different sound files attached to it.   I want to create AVI ( Raw) and then I will use third party software to merge all animations and create a big file.  I have done some changes in parameters in the first file close to the last keyframe, so I want when I merge the files, it should not look broken animation.