Deinstitutionalized player w/ lost track numbers

And so, just a blind leap:  how are you viewing and playing the songs–under what menu on the player are you doing this?  Are you playing the songs under the albums selection under Music?  Or are you playing the songs under the folders selection under Muisc?  If the former, it should be playing the songs in track order; if the latter, in alpha/no. order. 

And when you wrote that you put the songs in track order under MP3Tag, you mean that you actually edited/changed the numbers under the Track no. column, right?