Comment 1 for bug 1026590

This is actually a tricky fix, even though it wouldn't be a ton of lines of code. It will involve talking to SoundTouch and setting both the tempo and pitch parameters such that the pitch is the same as the previous value, but the tempo is too. (Right now I think Mixxx just sets the tempo and leaves the pitch alone). I'm not sure what the interaction is between the two variables, so I'm not sure what to set for the right behavior.