Interesting Post on the clipping = distortion concept.

[Doc Jones]

ah, ok. thanks for clarifying that onkel.

so then my thought that I should keep each track's signal below 0dB still the proper way to work?

[Onkel Dunkel]

Well as long as your audio tracks are recorded in 32 bit floating point and you keep the the overall volume under 0 dB when doing mixdowns to less than 32 bit you should be on the safe side (i think). But to be on the safe side i would keep below 0 dB in each track...