Audio issue when starting up and shutting down Windows Vista VM

A couple of days ago I noticed that when I started up and shut down my Windows Vista VM the audio for the logon, logoff, and shutdown sounds stutter really bad but when I play those same sounds from the sounds option in control panel they play just fine.  What could be causing this and is there a way to fix it?   I'm currently using VMware Player 4.0.1 to run my Vista VM.