I've been trying lots of free VSTi's on my Linux KXStudio PC. Lots of neat things. In particular, GalactiX seems to work particularly well. My MIDI controller's controls interface smoothly with the GUI, and I also like how quickly sounds can be made. (Too bad there aren't any presets. I only got 4 .wav files in the download, but I don't know how to load them..)
thanks for the tip! I'll look again, it's been a while since I've opened it because I've been working on another synth, but I'm curious to hear these presets you mentioned. And, since I wrote the last post (July) I've discovered that LMMS opens Windows-based VSTs very nicely, and I think that'll show me the list of sounds I couldn't get before.