PDB said:
Pretty sure the Die Hard Blu-ray is a remix for the 5.1 and the surrounds are now stereo but I will pull the soundtrack off tonight and check. The Blu-ray also has a 2.0 AC3 which is most likely the Dolby Stereo.
I'm going to pull Temple also and see if the DVD has mono surrounds.
Unfortunately my UK BD of Die Hard does not include the stereo track :(