First of all, i have to give the thanks to "J.Jørgen von Bargen" who contributed a LUA code to extract the .gpx virtual file system
This is just a start revision, it just read the basic features ( no bends, no vibratos, etc.. ), i'm not sure if it's time to test, since you'll find a lot of missing features.
well, i suppose i might be asking a really stupid question here, but anyway: there's a lot of files there in the sourcefourge page, where do i save them all to add the gpx code to tux guitar?