Perhaps you're looking for something like RubyScript2Exe
? It also seems like it might be possible to convert Ruby to C code, which can of course then be compiled into a binary.
Ruby is a very portable language, though somewhat young in acceptance, but its performance is terrible (for the moment at least). I think if multimedia is your thing, sticking to C or C++, which are much more commonly used in this area, would be a better idea.
[Note: if you take the second method of converting Ruby code to C, you presumably get the best of both worlds -- the performance of C and the flexibility of Ruby. If it works.]