I've had a copy of Leon The Professional since it was released but only recently I've found out about it's lack of 5.1 sound. How can I get a corrected copy?
Your best bet is to exchange it with the vendor, which is what most of us did.
To be precise: The original release didn't "lack" 5.1 sound, but there were problems with the mix on the 5.1 track (lack of bass and very low levels on the surrounds).
Before going through the trouble, you should confirm that you do indeed have the defective pressing. The corrected one has the number "06196" on the spine; the defective one has a number beginning with "04".
I can't exchange it with the vendor because I bought it back in August of 2000 and I checked with them and they don't accept exchanges after thirty days. Plus I don't have the reciept.