I To do not have any sound on mosthaunted.net?

[Lisa H]

I'm running a 2 week od acer 8920 laptop and also a acer 5100 quad core amd 9500 phenom all my codecs and drivers are up to dat i checked via a dxdiag but neither do i get any sound on both PCs nor does my friend on his xp and vista based machine is anyone else having this trouble is there a solution. Thanks Lisa