Being a bit clearer in your description would make it easier to assist...

You say you loaded mp3s - how? Via serial, ethernet, USB?
Did you upgrade the player, or are you using what was on it when shipped?
Did the display show the Syncing + arrows when uploading mp3s?
When you boot the player - anything at all at the display?
Does the stand-by LED blink? Will it go out if you press the top button?

Can you start Hyperterminal and connect the serial cable and see the boot messages? (grab them and post here).


/Michael