TTT Custom Jihad Sounds?

[kpjVideo]

Hey, so recently I came across a few posts about having custom sounds (bought via pointshop) to replace the Jihad (custom weapon source: [url]http://www.garrysmod.org/downloads/?a=view&id=33601[/url]) in TTT.

I've tried multiple methods including GetNWInt and the following which seemed more convenient at the time:

if (SERVER) then
   if ITEM.IsOwned("leeroy") then
      timer.Simple(2, function() self:Asplode() end )
      self.Owner:EmitSound( "ttt/leeroy.wav" )
   end
end

Although, unfortunately the SWEP returned an error trying to index "ITEM" and failed to do anything other than playing the primary animation and resetting it.
I was just wondering if there's any other way to fix this or has that function particularly been deleted?

Thank you <3

PS: Full code I'm using: [url]http://pastebin.com/raw.php?i=eSX4ky3W[/url]

[c👌de_g🎷]

It's ITEM:IsOwned.