I am in the final stages of restoring a BeoCenter 2200. It was "saved" from a local Salvation Army Thrift Store but had taken quite a beating. The smoked-perspex covers had a number of scratches and two serious scuff marks. I had been reading a blog about using BRASSO to remove scratches and clean screens on iPods (http://todd.dailey.info/archives/2005/09/27/restore-your-ipod-nano-to-new-condition-with-a-4-can-of-brasso/) and decided to bite-the-bullet and try it.
Son of a gun...it worked! Here's the procedure:
Remove the perspex cover if possible. Apply the Brasso in sections using just your index finger. Create a wet slurry and rub in the direction of the scratch until it begins to dry. Then add some more brasso and apply with the finger again. (Try to avoid getting Brasso on any nearby aluminium). After doing a section, gently wash off the Brasso with a damp sponge...do this a number of times. The area looks foggy but can now be buffed clean with a microfibre cloth (the kind used for eyeglasses, etc.). If a scuff or scratch persists, work on that area again.
I was amazed how many surface scratches and scuffs could be removed this way. Of course, deep scratches are out of the question, but with some effort, even some major scuffs can be removed or, at least, reduced significantly.
While this worked well for me, try this at your own risk 
Jim