Thanks very much Jim for your reference to uxcell.com and your advice on updating firmware.
My player looks just like the ones on that website and came from ebay seller hailitele who had the nerve to try and get me to retract my neutral feedback!!! Yeah right.
Unfortunately none of the firmware from uxcell.com or mympxplayer.org would get my glacier-like player to work again.
My player will install as an adfu device but won't even show up as a usb flash disk when I connect it to my WinXP Pro computer, even after trying thirteen glacier firmwares and the one from uxcell.com. I'm pretty sure the thing is well and truly KAPUT(dead).
I will still play around with it on occasion though, as new solutions present themselves
and will continue to share my experience.