Magicster

I've downloaded and got Patrick's mp3 file manager to work on my brand spankin new NW-S205f, ($90 at fry's) , works fantastic, thanks pat! Anyways my question is, does pat's mp3 file manager convert mp3's to ATRAC, or does it make it so the NW-s205f can actually play mp3's on the unit itself? Songs trasfer somewhat fast but not instantaneously so i was wondering. Thanks --Magicster--