I've tried both of your solutions, none of them worked. But I found out something... My songs are mixed at 96 kHz 24 bit, and when listening to the result it sounds a bit dull and , judging from the EQ, most of the lower frequencies are boosted.
However, when I convert my song to mp3 or cd quality( 44.1 kHz, 16 bit) it sounds all right and the EQ shows that all frequencies are boosted (more or less) equally.
I'm an engineer(Electro-mechanical, so I know a bit about physics and sound) and have been trying to figure this one out. Without succes I have to admit. When sampled at a higher frequency, the lower frequencies are boosted more? So it seems, although I've never heard of it. (or wasn't in class when it was told)
Someone ???