Q: Is there a way to stop iTunes from lowering the track volume of songs when I add files to my music library. Because of this when I add songs from the iTunes folder to my phone, they are a lot lower in volume. Also my burned CD’s seem to have the same effect.
What can be done about this?
A: iTunes should not normally reduce the volume on imported tracks by default unless the “Sound Check” feature is enabled. In this case, iTunes will apply a volume normalization setting to any CDs that you import in order to ensure that the volume of all tracks is balanced (so you do not get frequent volume changes when listening to mixed playlists, for example).
The Sound Check option can be enabled or disabled under the iTunes Preferences menu, on the Playback tab.
If Sound Check is disabled, then new tracks imported will not have any volume normalization data added to them, and any data in existing tracks will also be ignored (although it will be left in place).
Note that there is also a separate setting for whether or not Sound Check is used when burning audio CDs from your iTunes library. The Advanced, Burning tab under iTunes preferences has a setting for whether or not Sound Check data should be used when burning audio CDs.