Do such scripts even exist, and if so, where can I find them?

Thank you very much, HeLG TLA. The first script actually worked, although I had to tinker with it to figure out where to input it. But the second one simply won't work. I found the script !!MP:S#, which allows you to replace the standard in-game music, but I can't get it to play immediately when visiting an object. !!MP:P gives an error in the game. What could be causing this?

And another question – is it possible to disable the ability to enter cheats through file editing or using scripts? Or to disable the chat altogether?