Is there any difference in placing MP3 files in the "Music" folder versus some other location?
You can put the 'root' of the iTunes Media directory, "iTunes Music", where you like - though personally I prefer to keep all the actual database files in their original location &amp; just move the song files themselves.
This is quite possibly the setup you currently have.

To move it anywhere else, the simplest way is to change the directory in iTunes prefs > Advanced to the new desired location.
Also check 'keep organised' &amp; 'copy files to media folder'



It's been a long time since I did this, so the next step may be automatic or manual - test to see.

Auto - when you OK that dialog iTunes will ask you if it can consolidate to the new locations; say yes.
Manual - if it doesn't ask, then from File menu > Library > Consolidate files to have it do the same manually.

This will copy all the song files it is currently keeping track of into the new location - &amp; will then always use that location whenever you add new music.

Note that in my example above iTunes_Remote is the top level directory; inside it iTunes will then make the required folders for Audiobooks, Movies, Music, etc, as needed.