1. Is there way to change the sound card option for in game sounds? I am trying to play the 1993 DOS version of the game and the sound effects are too high quality. They are not like the sound effects I remember from my childhood. Is there a way to downgrade the sounds effects?

2. Some of my keys do not work. Especially the key that transfers lasers to shields. Is there a way to remap the keys using some DOSbox options?

there should be shortcut named setup in your start menu.

i know dosbox has some keymapping features, but i have no clue about it, never used it.

you can open the keymapping screen by pressing ctrl+f1