i was thinking about buying a new mp3 player (NEX II) that uses compactflash. it says i can tranfer thru a USB cable. mp3 players dont usually require a separate reader for the compactflash card, do they? im going to assume there's a port on the player, since it doesn't say explicitly that it needs one. but is there an advantage to using one? like faster transfer rate or something? i don't think i'll need the reader, but im just curious.