> Normalization will not make your songs all seem to play at the same volume. Applying a single overall adjustment level to each song isn't going to solve that problem, only dynamic compression can.

I think that is overstating the case a little bit. It will not completely solve the problem, but will greatly help. I have found normalization to be quite good at making all my songs play at the same volume.
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Ninti - MK IIa 60GB Smoke, 30GB, 10GB