If the volume of a music track is too low, try to raise it to the "Normal" volume (Volume +/- 94dB). In some situations, lowering the volume level of a music track will remove distortions from the ...
I have quite a large mp3 library (as I'm sure everyone here does), and anytime I play one of my playlists, by nature of the mp3 file, they are at different volume levels, some higher, some much lower ...