Audio does not work inside Fife fox browser. 3.6.8

I get logged in normally, but the audio player does not load. It says that I need a plug-in, but when I click on download plug-in, a message comes up that says there is no suitable plug-in available. I have re-downloaded Flash and Shock- wave player. Everything had be working a few weeks ago. IE8 works acceptably well. But this issue with Firefox is bugging me. I have even tried the Firefox beta 4, no joy. Any ideas please?

Adjusted some Quicktime plug-in settings and the audio is back!

hi there , i have the same problem with my Firefox 4.0 beta 12 , what did you do ? how did you solve it ? i have tried everything but nothing is working :( thanks

Bonjour. I have passed your comments on to our IT people and they are looking into what the problem is. This should be resolved quickly. Thank you Marie-Claire