having no experience with akais, i cant get too specific, but you can try this
do you have a wave editor? you can find one for free, and they are easy to use. try lopping (seamlessly) and chopping the wave in there and once you see where the wave ends (down to the millisecond) dump it or sample it into your akai and see if it pops.
what are all the loop options available to you?
Brains can be used like a "stress ball," but only once.