hi, i am currently looking for a commercial software that can specifically solve for the aeroacoustics siganatures that some directly from the exhaust of an airplane exhaust outlet and/or the aeroacoustics noise that comes from the engine stator-rotor interaction.

anyone know of any good commercial code that can do this?

Try :

http://www.vasci.com/products/comet.html

RADIOSS-CFD is particularly aimed at Computational Aero-Acoustic problems. In particular in features: -3D Navier Stokes compressible solver. -Explicit time integration. -LES turbulence. -Full fluid structure coupling. -Advanced silent & prescribed acoustic impedance boundary conditions. -Moving non conforming fluid fluid and fluid structure interfaces.

The website www.mcube.fr lists a lot of exemples in the M-Explicit section.