The Saxes are my go for saxophone sounds. You mentioned that they are samples, however they are not samples. This is physical modeling software. That is why it sounds so good and is so CPU intensive.

As Dan has said you must learn MIDI to get the most out of it, especially during input. Volume and vibrato are the big ones. Pitch bend is another but it can also be inputted easily, at least in Sonar.

Which brings me to how are you going to input? A wind controller is the best, I have an Akai EWI-USB that is just great with The Saxes. A keyboard with an expression pedal is also a good way to input and adding a breath controller will help tremendously.

I don't record or use plug-in in Biab or RB. Do you have a DAW? If not learn RB as any DAW is far superior to BiaB when recording. This is not a knock on BiaB, it just wasn't really designed to be recording software.

If you need help with The Saxes just contact me.

I phoned my wife and asked her if she wanted me to pickup fish and chips on the way home.
She just grunted.
She still regrets me naming the twins.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware