Quick Derma Question

How do I make a sound play when the mouse hover over the button?
Code I have already:



local DermaButton = vgui.Create( "DButton" )
DermaButton:SetParent( Base )
DermaButton:SetText( "Point Shop" )
DermaButton:SetPos( 20, 35 )
DermaButton:SetSize( 150, 50 )
	function DermaButton:Paint( w, h )
	        draw.RoundedBox( 0, 0, 0, w, h, Color( 0, 0, 255, 100 ) )
		surface.SetDrawColor( Color(0,150,255,255) )
		surface.DrawRect( 0, 0, self:GetWide(), self:GetTall() )
		
		surface.SetDrawColor( Color(0,0,0,255) )
		surface.DrawRect( 2, 2, self:GetWide()-4, self:GetTall()-4 )
	end
DermaButton.DoClick = function ()
    RunConsoleCommand( "say", "!shop" )
    surface.PlaySound( "buttons/blip1.wav" )
end



DermaButton.OnCursorEntered = function()
	surface.PlaySound("Whateverthefuck.wav")
end

Thank you very much

[editline]19th December 2013[/editline]

What about on exit? So somthing like
DermaButton.OnCursorLeave = function()
or
DermaButton.OnCursorExit = function()
None of above work but what is the one?

[editline]19th December 2013[/editline]

Found it out if anyone wants to know its
DermaButton.OnCursorExited = function ()