After adding a sound device to VMWare I got a “Failed to Open Sound Device, Busy” error. To fix the problem, I patched together instructions from several comments at http://ubuntuforums.org/showthread.php?t=331175. Below are my new instructions.
Next, we modify the vmware script. This part didn't work for me, but I completed it anyway.
Next, we move the vmware-vmx file and replace it with a script. This is the part that worked for me.