1) What are the best video and sound modes?

2) How do you simply drop an item and not throw it?

3) How do you save?

4) How do I exit lock-on mode after entering it? I've tried everything!

Thanks!

Use the throw command simultaneously with attack (or block if it's a shield). Make sure there's enough room for your character to drop the item. Any obstacle (e.g. a wall) will prevent him/her from letting go of it. Hit Esc to enter the menu then choose Game. Caps Lock. :)

The OP's post here will help you with your first question. -> http://www.gog.com/forum/blade_of_darkness/graphical_fixes