You say you have BIAB 2012 and also are headed toward 1 - 2 $29 sets of Real Tracks.
Jim Fogle said,"I strongly suggest that, at the very least, you update the Band-in-a-Box program to the current edition (2016 for Windows or 2015 for Mac). Then you can take advantage of new audio sources such as loops and UserTracks."
This is a great suggestion because 2016 will get you a tone more real tracks with the upgrade. That's what I did. It's likely that the cost of the upgrade could be less that if you were to purchase the same "included" sets individually. You'd have to research that a little.
I'm also exploring the Kontact route since there are many 3rd party free samples that can be loaded into it.

Does the noise in your head bother me ?