Hi rustyshoes2000
Well I'm not an expert with
Guitar Pro, but I don't think it's meant for that, it does appear to be able to Export files as a MIDI.
If you have a MIDI file of a piece of music there are several other programs that can play the MIDI file whilst recording audio sounds in a wave format.
Sonar - is a program that will do this quite well. In fact you can record as many tracks (Layers) as you want.
Cubase is another.
I'm sure there are many more at a price.
Anyone else know an easier way???