? ?Offering a reward of 30 hours who can tell me how to add memory mp3

My mp3 is benq joybee 200 of the original, only 256M of
originally wanted to buy one is not looking like it
Shangyan the mp3 to increase memory recall can be added to the 2G wanted
I seek the help of prawns to the
points such as how to distinguish between choice and the like ~ ~
Thank you! !

no such goods.to be developed.mp4 can be.but called memory card, do not call memory.