Windows Media Player processes audio a lot to make it sound
?"better"? (In Microsoft's ears?), regardless of what settings you choose.
Try playing it through something like Audacity and see if there is any change.
Sorry for boring answer.
If it is a
rock song, then it should certainly not be recorded in Dubly (TM). For any other genre, the use of Dubly (TM) is okay in small doses..