i think there is a problem in jquery.jplayer.min.js file which one i am using.
My jplayer is not working in only IE9.
its working in all other browser.
In this thread Mark P. notes that you must have MIME types set properly. Try putting this in your .htaccess:
AddType video/mp4 mp4
AddType video/mp4 m4v
More here: http://www.jplayer.org/latest/developer-guide/#jPlayer-server-response
The current major release (2.0.0) does not support IE9, but support is being added as of version 2.0.8 (github).
Put this line of code at the very beginning of your document.
<!DOCTYPE html>
It forces IE9 to work under standard document mode.
I had the same issue. Resolved it by forcing IE9 to use Flash instead of html5.
jPlayer({
"solution": navigator.userAgent.indexOf("Trident/5")>-1 ? "flash" : "html,flash"
})
The problem is IE9 like always jaa, try playing ogg files or m4a and that works
来源：https://stackoverflow.com/questions/6175417/jplayer-issue-in-ie9