Lucky brother having a freebie. I hope that he appreciates it. All what you need now is a good skin to go with it. I personally would design a skin that is black and white/sepia to go with that cabinet, so that it looks old but is modern as well. I think that it would suit the cabinet more.
I would be torn about using covers is a good idea but instead replacing it with the CD as a graphic, but then a old style skin with colour graphics might make it stand out as well.
Still a nice present for your bro, you could have possibly made a couple of hundred on resale value.