I took Gene's advice (I've been doing that a lot recently) and installed TextMate.
The TextMate logoīut editing in the SC window isn't much fun - you really need a decent code editor / file manager / syntax highlighter. Once it's in your Applications folder you're good to go. Installing SC on a Mac is really easy - it's just a regular. My new Mac arrived and one of the first things I wanted to do was set up SuperCollider (SC).