As to the auto-normalizer feature: remember that you can turn it off. The auto-normalizer was introduced for people who do not know how to use an equalizer. Most people on here are not part of that group and do know how to manage the curve and the pre-amp.
So feel free to turn the auto-normalizer off, ok?
Does the auto-normalizer work similarly as compressor/limiter, or is it more like ReplayGain?
I had bought External iPod Controls a while ago. I was first really happy that it also works with Equalizer as well as the default iPod app, but then it stopped working properly (no matter what setting, as soon as I press one of the volume buttons, it will skip tracks).
I'm just wondering if you have any ambition/interest in doing something similar to External iPod Controls? It is a fantastic idea and solves one of the biggest problems of the iOS devices for people who listen to music by touch only (such as having the device in their pocket), and hate to have to look at the screen in order to skip tracks, pause, and so on.