Hi manolito,
I'm sure your trip in Scotland was memorable and finding good weather in Great Britain is a nice fluke!
Thanks for testing the new alpha. The cosmetic bug is quickly fixable. We agree that simple peak detection and avisynth normalization are redundant. Very likely I will drop Normalize in Edit Title > Audio. I think the more convenient way is to erase the Normalize option and to move the peak level check in the AviSynth tab, under Amplify Audio option. It will be a bit hidden, but I would say more elegant. Then, as you suggest, I can leave the Normalize option in Preferences > Audio (with a target dB textbox), to trigger the peak level check at runtime during project execution.
I think this approach is more streamlined and fine for standard users. More sophisticated users can still use manolito's ReplayGain or EBU R128 normalization extensions.
Bye