DirectShow graph separate Avi and Wav (play back, not saving)?

I am new to Direct Show. What I am trying to do is use one iGraphBuilder object, to play both a silent Avi video, and a separate Wav file at the same time. I can't merge the two into one video, but I would like it to appear as if they were.

Is there any way to go about using one set of filters to run an avi and wav file concurrently?

Thanks!