Excellent news.
SuperCollider, the rather Smalltalk-like audio synthesis programming language for the Macintosh, is
now Free Software; it is being rewritten for MacOS X and Linux and released under the GPL.
I played around with the MacOS 9 version of it a while back and it was a fun thing to play with. Not as visual as Pd/MAX, but more comfortable for those used to programming, and syntactically a very nice language.