get yourself an editing program like adobe audtion...if u need dat go to download.com download da demo and i'll sell u da crack keygen for 100 cp bucks....
with the editing program u can loop it if u want it longer
and bad boy killa u can use it to cut your samples down so they dont run into one another...
another thing u can do to use longer samples is stretch out your drum sequencer so it has 2 bars per sequencer instead of jus 1
this is what it will look like
if u need help using tha editing program get at me but that is all u have to do
that is one of my beats called pack up ur bags and leave.....
i can let u hear da finished product if u like....
i make my beats like this because u can get more creative with the drumz and shit and u can play longer samples in tha piano roll...