I brought a BIAB song that features a solo into RealBand and it looks like there's two tracks for the solo: a MIDI track and a generated audio track that greatly improves on the MIDI track.

My question is this: if I ask another MIDI track to my song in RealBand, how can I manually do the same thing to the MIDI track that either RealBand or BIAB did automatically, that is turn it into an improved audio track without changing the notes (as selecting a RealTrack appears to do)?

I would appreciate any help you can provide. I am very new at both BIAB and RB.