Mapping Music Brainz Information to Tag Fields

This AniGif shows the possibilty to move an entire block of selected tracks with the mouse (clicking on the first track of the block and then with pressed Shift key the last track of the block).
And the possibility to move some other randomly selected tracks with the Move up and Move down buttons:

Align local files to metadata from internet source

The little blue + character indicates where you "insert" the currently selected tracks.