Out of interest....Just for fun, I downloaded that version. For whatever reason, it didn't seem to handle my Auro-3D titles. It simply played them in normal 5.1 (no height speakers) and the MPC-HC version played them perfectly.
Which version of MPC-BE did you try? I'm currently using 1.6.11 which is available from here: https://forum.doom9.org/showthread.php?t=165890
And just so you know. The newest builds of MPC-HC can be found here: https://forum.doom9.org/showthread.php?t=175209
Cheers