... exported files retain all setting assignments. I edit my scores on OSX and it's a hassle to redo all the tempos (and Repeat Times, and Styles) after I transfer them to my iPod.
EDIT (sorry, coming out in v2.7)
This should work already as the new song/playlist export format contains specific player settings. The settings need to be altered in order to save, for example, if chorus is already 3x and you want it exporting as 3x, change it to 4x then back to 3x. It also saves player style and tempo (bpm.)
(You do not need to Play for the settings to save.)