I agree that the audio was pretty bad. You have to turn it up so loud that when a commercial suddenly starts you get blasted.
If only Sherlock weren't such a drug addled wimp, Moriarty wouldn't have gotten away. If you've seen any of his others movies you know he turns to cocaine when he gets bored.
I recommend "The Private Life Of Sherlock Holmes" as one of his better movies. I haven't watched the rest but will probably stay away from the old black and whites because of their poor audio quality.