Sorry, forgot about this. Here is the reg that will need to be fixed. Please note the MenuPop sound and its location in the string. You will also either need to find a sound or create one. Then you can name the sound MenuPop.wav or change the reg entry to the name of the sound you choose.
Code:
[HKEY_LOCAL_MACHINE\Snd\Event]
"Curr0"=multi_sz:"alarm2","", "alarm2","default","Empty","alarm2","infbeg","infend","infend","MenuPop","HWandSW","","MsgBox","infbeg","infend","infend","alarm2","","","voicbeep","RecEnd"