xsynth-dssi

First off, you've have done some great work with QTractor. It's the first sequencer which actually works on my system, despite being 'alpha' software. Rosegarden regularly crashes or does some other fun like suddenly appearing / disappearing notes. Muse doesn't work with FluidSynth, though it seems to work on everyone else's computer.

Ok, now about xsynth-dssi:

Sometimes QTractor doesn't save the configuration. It's quite easy to reproduce. Just play around with the envelopes in the editor and close the editor window - sometimes QTractor falls back to the old settings. Not a real problem, as I primarily use Soundfonts, but I just wanted to tell.