"U have to install the codec wmfadist.exe in directory c:\program files\sierra\fear.
But if u have a codecpack installed before install the game, and u find an error message.
Go to c:\windows\system32 and search a file called l3codeca.acm and rename it to l3codeca.acm_bak.
Then install the codec wmfadist.exe is in directory c:\program files\sierra\fear again, and voices works well "