FLASHMAN852. He sells memory cards and sticks and other of the sort, so if your player has expandable memory, you might find his products useful.
I have bought from him twice and have received good service on both occasions. His postage is high, but if you search a little you can pick the item that is priced the lowest to the currency relevant to you. And his products have been genuine in my experience.
http://stores.ebay.co.uk/FlashMan852_W0QQssPageNameZstrkQ3amefsQ3amesstQQtZ km