I have created a storyline module that contains imported videos (.wmv and .mp4). After publication (CD, LMS, and Web) they all play perfectly for me on IE9 and Chrome. When the link is sent to others on IE8, IE9, and IE10 they do not play. The slide is just blank, but the progress bar is moving (no sound or visual). The link does work when played in Chrome on various computers.
Any thoughts or suggestions?