No. Stop asking.
Why not? Would be much better if anyone could work on it.
I don't know about you, but if I invest a significant chunk of personal time working on some project, I don't always want to just throw the source out for the world to take/copy/steal/whatever (and yes, I have had some issues with this kind of stuff in the past, where people have gotten my code, modified it significantly, and then refused to give out the changes to the code).
Not everyone wants to do this. Don't pressure someone to do it if they don't want to.
Another thing I might add is the fact that one person working on the code (for small/medium projects such as this) will probably end up leading to better quality control. (If you let just anyone start making changes, and you aren't using some kind of version control to keep track of everything, you're gonna end up with a mess).
Finally, if someone releases code, they will inevitably be forced to answer questions like "why won't this compile" because someone out there wants to compile it from scratch (but doesn't quite understand how to work the compiler).