QUESTION ABOUT SAMPLE LENGTH

IM BRAND NEW TO THE PRODUCING THING SO I HAD A SMALL QUESTION TO ASK. I WANTED TO KNOW ABOUT SAMPLE LENGTH AND HOW IT WORKS. I HAVE A BASS PROGRAM THAT I LOADED OFF OF A LINK THAT I GOT OFF THIS SITE THAT CONTAINS SAMPLES THAT PLAY AS LONG AS I HOLD THE PAD. HOW DO I GET MY LOADED SAMPLES(KICK,SNARE,HIHAT)TO PLAY FOR AN EXTENDED TIME AS MY BASS PROGRAMS SAMPLES DO? OH YEAH I HAVE A MPC 2000XL

Most kick, snares, hi-hats are one hits. They won't play continually. The Forum GODS have spared you.