Max memory upgrade for mpc2500

I been lookin around this forum, but im pretty new to this, i just got my new mpc2500 but i can only record like 10 second samples, and then it automatically cuts off, i think its because it only has 16mb of ram, so im trying to find out how much ram i can upgrade it to, and if that's even the problem. Help me out here lol

all the knowledge you seek can be obtained here

http://www.mpc-forums.com/search.php

and here

http://www.akaipro.com/prodMPC2500.php