If you do this through Active X I'm quite sure it won't show at all and definitely not sound as well, and also won't allow control of the media controller controls.
If you do it in a picture control for the video display and use LabVIEW controls to control the playback and such it will most probably be visible and also work, but the sound still won't be audible. There is no easy solution for this and the best would be to actually do the playback and everything rather as an embeded object tag in an HTML document altogether. Rolf K