The server appears to, since at least November 2005. As for the language, it appears it only runs at 32. McCartney says: "There shouldn't be any problem running it as a 32 bit app on a 64 bit machine. SClang cannot be compiled for 64 bit because it relies on sizeof(Object*) < sizeof(double). This would require significant reworking to fix." and "I don't really see a big need to run the language in a 64 bit address space, though." See this thread: http://www.nabble.com/sc-on-linux-64-bit-tf477603.html#a1300129 I haven't used things like Rohan Drape's Scheme or Haskell SuperCollider clients, so I can't really say much about them. I boot scserver and SuperCollider appears in Patchage automatically hooked up to the audio outs. I can swap things around, like patching SuperCollider into various channels in Ardour, Jamin, JAAA, or other apps. I can patch audio into SuperCollider. I'm not using esd or anything, if that's what you mean. Renick -- Renick Bell http://the3rd2nd.com