hi !! Couple of dayz back i came across this software called " Guitar Pro " .. well i believe this is all wat we need to sort of the incorrect tab problems ... not only for guitar but for all the instruments played in a particular track .. the files for this software ( .gpf format ) are available at www.mysongbook.com where u can find almost all songs .. The software is a demo on guitarpro.com but if u have LIMEWIRE,u can easily have it !! So get started ... all the best !!