You'll need a record app of your choosing, though GB does the job pretty well, and ideally you'll want an audio interface, which can run the gamet from a basic adapter cable to allow a line or instrument level 1/4" jack, to a proper audio interface with zero latency monitoring ability, mic pre's, stereo or more inputs etc.
The Axe II discussion forum likely isn't the best place for help though because your question really has nothing to do with the Axe II and is actually about how to use OIS recording tools, for which there are plenty of dedicated sites on the web