Homebrew PCBs

Can anyone explain how to get the Autorouter in Eagle (Freeware 
Version) to route two tracks in the PCB layout to one pin in the 
schematic? Specifically what I am working with are the "NMOSSOT223" 
and "PMOSSOT223" in the "zetex.lbr" library. If I open the device in 
the library editor and check the connections it shows schematic 
symbol PIN Drain to board layout PAD2, schematic symbol PIN Drain2 to 
board layout PAD4, schematic symbol PIN Gate to board layout PAD1, 
schematic symbol PIN Source to board layout PAD3. If the device is 
placed in a schematic / board and the board is Autorouted, no traces 
route to PAD4.
I see a couple of different ways to handle this but I may be missing 
something else, if you know of some solution I do not see, please 
tell me. 
Options:
1.) Manually route trace in the "Package" portion of the device. 
Should this signal be placed on the "Unrouted" layer in 
the "Package", and would that allow the PAD2 to PAD4 trace to be 
flipped from top layer to bottom layer when the device is flipped?

2.) Close the schematic and simply manually route the traces in the 
board layout before performing any Autoroute.

As a number of devices on the market i.e. FETs in SO8 Packages have 
the same connection made to multiple physical package PINS (or 
footprint PADS) I'm hoping someone can tell me a way to get around 
editing library Packages or manual routing. The SOT223 Package is 
just a simple example.

Thanks 
Mike L.