[Windows 8 Development and Hacking] syn3h:
This is a registry hack that enables several hidden sound options in Control Panel. This includes the start sound, alarms, rings, etc. Tested working on RT 8.0, RT 8.1, and 8.1 Pro. Back up

[HKEY_CURRENT_USER\AppEvents\EventLabels]

before you use this!

Here is what it changes:

[HKEY_CURRENT_USER\AppEvents\EventLabels]

[HKEY_CURRENT_USER\AppEvents\EventLabels\.Default]
@="Default Beep"
"DispFileName"="@mmres.dll,-5824"

[HKEY_CURRENT_USER\AppEvents\EventLabels\ActivatingDocument]
@="Complete Navigation"
"DispFileName"="@ieframe.dll,-10321"

[HKEY_CURRENT_USER\AppEvents\EventLabels\AppGPFault]
@="Program Error"
"DispFileName"="@mmres.dll,-5825"

[HKEY_CURRENT_USER\AppEvents\EventLabels\BlockedPopup]
@="Blocked Pop-up Window"
"DispFileName"="@ieframe.dll,-10325"

[HKEY_CURRENT_USER\AppEvents\EventLabels\CCSelect]
@="Select"
"DispFileName"="@ieframe.dll,-10323"

[HKEY_CURRENT_USER\AppEvents\EventLabels\ChangeTheme]
@="Change Theme"
"DispFileName"="@mmres.dll,-5860"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Close]
@="Close Program"
"DispFileName"="@mmres.dll,-5826"

[HKEY_CURRENT_USER\AppEvents\EventLabels\CriticalBatteryAlarm]
@="Critical Battery Alarm"
"DispFileName"="@mmres.dll,-5827"

[HKEY_CURRENT_USER\AppEvents\EventLabels\DeviceConnect]
@="Device Connect"
"DispFileName"="@mmres.dll,-5828"

[HKEY_CURRENT_USER\AppEvents\EventLabels\DeviceDisconnect]
@="Device Disconnect"
"DispFileName"="@mmres.dll,-5829"

[HKEY_CURRENT_USER\AppEvents\EventLabels\DeviceFail]
@="Device Failed to Connect"
"DispFileName"="@mmres.dll,-5830"

[HKEY_CURRENT_USER\AppEvents\EventLabels\DisNumbersSound]
@="Disambiguation Numbers"
"DispFileName"="@C:\\Windows\\System32\\speech\\speechux\\sapi.cpl,-5566"

[HKEY_CURRENT_USER\AppEvents\EventLabels\EmptyRecycleBin]
@="Empty Recycle Bin"
"DispFileName"="@mmres.dll,-5831"

[HKEY_CURRENT_USER\AppEvents\EventLabels\FaxBeep]
@="New Fax Notification"
"DispFileName"="@mmres.dll,-5858"

[HKEY_CURRENT_USER\AppEvents\EventLabels\FeedDiscovered]
@="Feed Discovered"
"DispFileName"="@ieframe.dll,-17315"

[HKEY_CURRENT_USER\AppEvents\EventLabels\HubOffSound]
@="Off"
"DispFileName"="@C:\\Windows\\System32\\speech\\speechux\\sapi.cpl,-5563"

[HKEY_CURRENT_USER\AppEvents\EventLabels\HubOnSound]
@="On"
"DispFileName"="@C:\\Windows\\System32\\speech\\speechux\\sapi.cpl,-5562"

[HKEY_CURRENT_USER\AppEvents\EventLabels\HubSleepSound]
@="Sleep"
"DispFileName"="@C:\\Windows\\System32\\speech\\speechux\\sapi.cpl,-5564"

[HKEY_CURRENT_USER\AppEvents\EventLabels\LowBatteryAlarm]
@="Low Battery Alarm"
"DispFileName"="@mmres.dll,-5832"

[HKEY_CURRENT_USER\AppEvents\EventLabels\MailBeep]
@="Desktop Mail Notification"
"DispFileName"="@mmres.dll,-5837"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Maximize]
@="Maximize"
"DispFileName"="@mmres.dll,-5833"

[HKEY_CURRENT_USER\AppEvents\EventLabels\MenuCommand]
@="Menu Command"
"DispFileName"="@mmres.dll,-5834"

[HKEY_CURRENT_USER\AppEvents\EventLabels\MenuPopup]
@="Menu Pop-up"
"DispFileName"="@mmres.dll,-5835"

[HKEY_CURRENT_USER\AppEvents\EventLabels\MessageNudge]
@="Message Nudge"
"DispFileName"="@mmres.dll,-5866"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Minimize]
@="Minimize"
"DispFileName"="@mmres.dll,-5836"

[HKEY_CURRENT_USER\AppEvents\EventLabels\MisrecoSound]
@="Misrecognition"
"DispFileName"="@C:\\Windows\\System32\\speech\\speechux\\sapi.cpl,-5561"

[HKEY_CURRENT_USER\AppEvents\EventLabels\MoveMenuItem]
@="Move Menu Item"
"DispFileName"="@ieframe.dll,-10322"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Navigating]
@="Start Navigation"
"DispFileName"="@ieframe.dll,-10320"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Default]
@="Notification"
"DispFileName"="@mmres.dll,-5865"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.IM]
@="Instant Message Notification"
"DispFileName"="@mmres.dll,-5863"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Alarm]
@="Alarm 1"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5888"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Alarm10]
@="Alarm 10"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5897"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Alarm2]
@="Alarm 2"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5889"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Alarm3]
@="Alarm 3"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5890"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Alarm4]
@="Alarm 4"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5891"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Alarm5]
@="Alarm 5"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5892"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Alarm6]
@="Alarm 6"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5893"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Alarm7]
@="Alarm 7"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5894"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Alarm8]
@="Alarm 8"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5895"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Alarm9]
@="Alarm 9"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5896"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Call]
@="Incoming Call Notification 1"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5872"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Call10]
@="Incoming Call Notification 10"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5881"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Call2]
@="Incoming Call Notification 2"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5873"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Call3]
@="Incoming Call Notification 3"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5874"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Call4]
@="Incoming Call Notification 4"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5875"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Call5]
@="Incoming Call Notification 5"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5876"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Call6]
@="Incoming Call Notification 6"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5877"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Call7]
@="Incoming Call Notification 7"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5878"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Call8]
@="Incoming Call Notification 8"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5879"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Looping.Call9]
@="Incoming Call Notification 9"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5880"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Mail]
@="New Mail Notification"
"DispFileName"="@mmres.dll,-5861"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Proximity]
@="NFP Completion"
"DispFileName"="@mmres.dll,-5868"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.Reminder]
@="Calendar Reminder"
"DispFileName"="@mmres.dll,-5864"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Notification.SMS]
@="New Text Message Notification"
"DispFileName"="@mmres.dll,-5862"

[HKEY_CURRENT_USER\AppEvents\EventLabels\Open]
@="Open Program"
"DispFileName"="@mmres.dll,-5839"

[HKEY_CURRENT_USER\AppEvents\EventLabels\PanelSound]
@="Disambiguation Panel"
"DispFileName"="@C:\\Windows\\System32\\speech\\speechux\\sapi.cpl,-5565"

[HKEY_CURRENT_USER\AppEvents\EventLabels\PrintComplete]
@="Print Complete"
"DispFileName"="@mmres.dll,-5840"

[HKEY_CURRENT_USER\AppEvents\EventLabels\ProximityConnection]
@="NFP Connection"
"DispFileName"="@mmres.dll,-5867"

[HKEY_CURRENT_USER\AppEvents\EventLabels\RestoreDown]
@="Restore Down"
"DispFileName"="@mmres.dll,-5841"

[HKEY_CURRENT_USER\AppEvents\EventLabels\RestoreUp]
@="Restore Up"
"DispFileName"="@mmres.dll,-5842"

[HKEY_CURRENT_USER\AppEvents\EventLabels\SearchProviderDiscovered]
@="Search Provider Discovered"
"DispFileName"=hex(2):40,00,69,00,65,00,66,00,72,00,61,00,6d,00,65,00,2e,00,64,\
00,6c,00,6c,00,2c,00,2d,00,31,00,32,00,35,00,31,00,33,00,00,00

[HKEY_CURRENT_USER\AppEvents\EventLabels\SecurityBand]
@="Information Bar"
"DispFileName"="@ieframe.dll,-10326"

[HKEY_CURRENT_USER\AppEvents\EventLabels\ShowBand]
@="Show Toolbar Band"
"DispFileName"=hex(2):40,00,69,00,65,00,66,00,72,00,61,00,6d,00,65,00,2e,00,64,\
00,6c,00,6c,00,2c,00,2d,00,31,00,30,00,33,00,32,00,34,00,00,00

[HKEY_CURRENT_USER\AppEvents\EventLabels\SystemAsterisk]
@="Asterisk"
"DispFileName"="@mmres.dll,-5843"

[HKEY_CURRENT_USER\AppEvents\EventLabels\SystemExclamation]
@="Exclamation"
"DispFileName"="@mmres.dll,-5845"

[HKEY_CURRENT_USER\AppEvents\EventLabels\SystemExit]
@="Exit Windows"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5846"

[HKEY_CURRENT_USER\AppEvents\EventLabels\SystemHand]
@="Critical Stop"
"DispFileName"="@mmres.dll,-5847"

[HKEY_CURRENT_USER\AppEvents\EventLabels\SystemNotification]
@="System Notification"
"DispFileName"="@mmres.dll,-5848"

[HKEY_CURRENT_USER\AppEvents\EventLabels\SystemQuestion]
@="Question"
"DispFileName"="@mmres.dll,-5849"

[HKEY_CURRENT_USER\AppEvents\EventLabels\WindowsLogoff]
@="Windows Logoff"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5852"

[HKEY_CURRENT_USER\AppEvents\EventLabels\WindowsLogon]
@="Windows Logon"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5853"

[HKEY_CURRENT_USER\AppEvents\EventLabels\WindowsUAC]
@="Windows User Account Control"
"DispFileName"="@mmres.dll,-5859"

[HKEY_CURRENT_USER\AppEvents\EventLabels\WindowsUnlock]
@="Windows Unlock"
"ExcludeFromCPL"=dword:00000000
"DispFileName"="@mmres.dll,-5869"