PARAM to the ASX file.
Note that WMV might require an additional plugin for Firefox and other browsers.
JW Player is an open source video / audio player for the Web. It supports playback of any format the Adobe Flash Player and HTML5 browsers can handle (FLV, H.264, MP4, VP8, WebM, MP3, AAC, JPG, PNG and GIF). It also supports various streaming and playlist formats (including RMTP, HTTP, live streaming and more) and a wide range of playback options.
It has a JS API.
try this hope it helps http://www.pcurtis.com/media.htm