Thanks for testing the file I uploaded
Here's the board I posted the tracks from: it's a bipolar tracking linear PSU. Unfortunately I couldn't find a wire ended transformer in the library so I just drew it graphically which generates some errors that need to be ignored, if there's a way of doing it properly please let me know. Eagle could do with more off-board components such as batteries, speakers, switches, pots and transformers, in the default libraries, perhaps I'll create some, if I can be bothered.
I've downloaded Kicad and will install it. I wouldn't be surprised if the lack of libraries could be something to do with licensing? Open source developers tend to be very paranoid about copyright violation and making sure that all the material distributed with their software is under a GPL compatible license and is not patented in any way.