Same iTunes library on different computers.
I have two personal computers that both serve different functions (one is a Mac and another is a PC running Windows 7) and I would like to use the same iTunes library between them, using my external hard drive. On the mac, I have moved the default library to the external hard drive, and when the drive is connected it runs through there. I would like to do the same for the PC, but instead of creating a new library folder, how do I tell iTunes to use the one that is already there from the Mac? I would like to do this through the external hard drive, as I use the computers in different locations and Home Sharing is not an option. I would like to be able to use the external hard drive to access my library and sync my iPod from either laptop, because when I travel I leave the Mac at home.
MacBook, Windows 7