I just installed jack-rack and find the mouse wheel behavior a bit odd. The sliders are horizontal, and turning the wheel 'up' (away from you) decreases the slider value, and vice versa. This seems backwards to me. What does everyone else think? This is one of those things that will *have* to work the same way in every app, otherwise it's maddening for users, so we had better agree on it now. Alternatively, there has to be one place where this behavior can be set for all apps. What is not acceptable is for 50% to do it one way and 50% the other. What is really needed is a set of human interface guidelines for Linux audio apps. Better to do this now, while much of the code is not mature, than later, and have a bunch of different apps which work, except that the widgets work completely different from one app to another for no good reason other than that person A felt like doing it like this and person B like that. You can talk about freedom all you want but the users do not care about this kind of thing, it just looks like the left hand is not talking to the right. Professional users (rightfully) demand a consistent interface, unless there is a good reason (extra functionality) not to provide one. I would like to start putting these guidelines together. A good place to start is to document the behavior of the most popular and mature existing apps. Any suggestions are welcome. Lee