It sort of seems like cheating to learn a guitar track this way but when you work 7/10s'it dosen't leave much time to tab out songs by ear.
jimini2001, I don't think this technology will help you learn songs off records. For one thing, recordings are mixed -- all kinds of stuff in the WAV file going on at once -- it's virtually impossible to separate parts out of that. It's kind of like trying to get mixed paint back into separate cans of its constituent colors...
Also, even if you had a monophonic, single-instrument part isolated out of a mix, it needs to be as clean as possible for software to figure it out. Overtones from distortion, slurring and bending of notes, other effects (delay, 'verb, etc.) are going to complicate the deal.
I have a feeling that about all that you can use this software for is to create a MIDI track from something you pla yourself and recorded very cleanly and played very precisely, and even then you'll probably have to twiddle a few of the notes it figures out from that...
Maybe someday this technology will be there, but not yet...
Another possibility is to record the song digitally and just slow it down. You can do this without affecting the pitch. This makes it (hopefully) easier to suss out and learn fast, complex parts. I'm sure I've seen some sort of tools that do this (both software and hardware).
-AlChuck