/static/scripts/tiny_mce/plugins/media/css/content.css

1.mceItemFlash, .mceItemShockWave, .mceItemQuickTime, .mceItemWindowsMedia, .mceItemRealMedia {border:1px dotted #cc0000; background-position:center; background-repeat:no-repeat; background-color:#ffffcc;}
2.mceItemShockWave {background-image: url(../img/shockwave.gif);}
3.mceItemFlash {background-image:url(../img/flash.gif);}
4.mceItemQuickTime {background-image:url(../img/quicktime.gif);}
5.mceItemWindowsMedia {background-image:url(../img/windowsmedia.gif);}
6.mceItemRealMedia {background-image:url(../img/realmedia.gif);}