You can either use a program called Activesync that should be on the CD that came with your device. If not you can download it from Microsft's site. It will allow you to transfer files to/from your device and PC, but it can be slow with mp3 transfers. Another way is to buy a SDCard reader for your PC and get a MicroSD to SD adapter and transfer the files that way. It is much faster IMHO.
