Intel iMac 20" 2.16/4gb (3gb usable) Ram/256mb Video card/Mac OS 10.5.5/Fusion 2 Build 116369 running a bootcamp partition with Windows XP Pro SP3 and all updates.

I've had the same problem. I've tried using the 5.1.x driver dated 2001 and the 6.0 driver dated 2008. I've tried uninstalling
/reinstalling. I have looked for the 5.23633.0 driver but I can't seem to find it. I know I've had sound in the past wih this VM but I didn't notice when it stopped working.

Windows sees the device as working properly. The Sound Icon in the window seems to light up blue when sound is supposed to play. Mac OS X has been playing sound fine.

For me resetting the NVRAM helped. I guess it has to do with running vista in bootcamp on the same machine (the XP in which there was no sound was not bootcamp). It seems that vmware thought the volume was set to zero (the volume is stored in NVRAM) or something, because the speaker icon was turning blue when there XP was trying to play sound, I just couldn't hear anything.

To reset the NVRAM refer to http://support.apple.com/kb/HT1379

Hope this helps!

Wow, thanks for at least a lead.

So I gave this a try and Reset the PRAM/NVRAM and started Fusion. The sound worked. When I shudown Windows I had a very unusually long shutdown time but shutdown properly. When I started Windows back up it came to the boot selection screen (safe mode, etc....) I felt this odd being there seemed to be nothing to trigger it (though it took a while Windows did shutdown properly) I selected Normal on that assumption it froze during boot (I believe at the loading persoanl settings screen but I'm drawing a blank right this second). I had no response from Windows and Fusion was troublesome to navigate (If I selected Fusion from dock icon I had no mouse and could not access Fusion's menu. If I selected the Guest window in Fusion I still had to be careful or I would lose my mouse). I forced a restarted of the VM and started in Safe Mode. After the boot I restarted normally and everything ran fine short of there being no sound. I shutdown the VM and my Mac did another PRAM/NVRAM reset and tried again, no sound. I noticed my drivers were the 2008 drivers. I rolled them back and triedthe Reset again, no sound. I'm now going to try the 2.0.1 update so here's hoping!!!!

Most unfortunately, no 2.0.1 has not worked. I've tried several permutations of switching between the 5.1 driver and the 6.0 driver and Resets. Nothing has been able to at least bring sound back permanently (I actually don't think I've had sound since the first time). I've had a lot of long boot times, long shutdown times while trying these various combonations, and lockups-o-plenty.

VMWare is pathetic.

I have even PAID for support now and still nothing is successful. All the techs do is give me the run around. VMware SR# 1147498611.

Don't pay for support. It's just another rip off IMO.

I'm very dissatisfied.

Thanks for the tip but I'm positive in my case and relatively sure in the others that your problem and ours is not the same problem. I have seen that article and it is even referred to in the original posting. I have tried that and still have no sound. I our cases the driver reports to be working properly but it has no sound, This happens with both the 5.1 and the 6.0 driver. Futhermore, it is actually "working" as Fusion seems to reconize that Windows is producing sound (the sound icon at the bottom of a windowed VM starts glowing blue when sound is produced in the VM), yet no sound is produced out of the speakers. Sound works fine in Mac OS X before/while/after the VM runs. It seems most plausable that our problem lies in some sort of NVRAM/PRAM-Fusion discrepency. I believe some one mentioned that Fusion probably thinks the Volume in Mac OS X is muted or something to that effect. In all honesty, I wish it were that problem because we would have sound now, but as posted there doesn't seem to be any real help on this issue and so it continues.....