HTML in Message Wroks is Report Studio under IE But Not in FF

[pdaprem]

I'm migrating to a Linux based system and running my Report Studio reports in the FF browser on Linux RHEL6.  When I do the html code below doesn't produce the audible sound I get when running the reports in the Windows XP KVM machine on my Linux based laptop or when I ran the reports on my old native Windows XP based system in either IE.

When I run under FF on the Linux based laptop I do not get a audible tune. I do get a message about a missing Plugin being required but when I click the link  for looking the missing plugin I get a message suitable plugins could be found.   I get the same condition if I run in FF on the Windows virtual machine.  I also had a colleague who is running native Windows try and he gets the same condition.    Any ideas??

<EMBED SRC="../app/LEC/images/ding.wav" HIDDEN="true" AUTOSTART="true" PLAYCOUNT="2">

NOTE: Do need to have code which will work on IE also since most of the users of the Report will be running using IE

[CognosPaul]

This is less of a Cognos problem and more of a web development problem.

Take a look here: http://forums.mozillazine.org/viewtopic.php?p=2200102

That has an explanation of the warning you're getting from Firefox, and possible ways around it to ensure compatibility in IE and Firefox.