I just opened up the PTQ demo to see the binaural placement, and yes, I can see that the controls are there, but not standard roll/pitch/yaw. The standard controls are yaw (head rotation left/right), head position (front to back), and head position (side along keyboard). That means you could realistically move your head toward the piano and from side to side, and turn your head. My implementation is roll/pitch/yaw, which are rotations from a single point - turn head left/right, look up/down, and turn your head sideways (one ear closer to ground).
There are arguable pros/cons for both implementations, And certainly using the PTQ binaural rendering engine would be better and more direct, but connecting the OSC or headtracking software has always been the biggest challenge to me, and really is beyond my coding capabilities….