CD-Rs: there's no lockout mechanism, but you should burn at low speeds and use high-quality media to get them to work. Lenses of that era have trouble with CD-Rs, and the age of it at this point doesn't help either.
RGB monitor: CD32 has composite and S-Video out. If you have an SX-1 you'll also get an RGB port. SX-32 gives you a VGA port (but no scandoubling).