Hey, Rob:

In the support section of the PG Music website, on the Video page, there is a video titled: Using AmpliTube with Band-in-a-Box and RealBand.

Approximately 31-minutes-and-15-seconds into the video, the narrator shows how to record in RealBand through Amplitube. Although you did specify Band-in-a-Box in your original post, the info in the video may still be of some use to you. Hotcha!

Be well, be happy.

Sincerely, Bro. Dave
www.brodavelister.com