To avoid duplication of effort I'd like to announce that I'm working on a Linux (ALSA sequencer + JACK) app based on the ZR-3 VSTi code that was released on SourceForge. The ZR-3 is described as a three-channel drawbar organ, and you can see some reviews of the VSTi at http://www.kvr-vst.com/get.php?mode=show&id=213 Right now I have the backend working so I hear organ sounds but I need to do more work on the MIDI input (the VSTi understands raw MIDI bytes, while ALSA sequencer sends event structures..) and obviously build some kind of Linux GUI, probably with GTK+ 2.x As far as I know this is the only VSTi for which source code has been made available under a Free license. If you know of other instruments that are available (and so could be amenable to the same transformation) then please let the list (and thus me) know. Nick.